Mature Conduct

In the Christian life, one of the easiest traps to fall into is thinking we have already arrived.

Some believers think maturity means they have reached a point where they no longer need correction. Others think maturity means they already understand everything important about the Christian life.

But the apostle Paul gives us a different picture.

Earlier in this chapter Paul said:

“Not that I have already attained, or am already perfected; but I press on…” (Phil. 3:12)

Paul, the apostle who planted churches, wrote Scripture, and suffered greatly for Christ, says he has not arrived.

Then just a few verses later he writes something that seems almost contradictory.

“Therefore let us, as many as are perfect, have this attitude…” (Phil. 3:15)

Wait a minute.

Paul just said he was not perfect, but now he calls believers perfect.

What does he mean?

The key is understanding that Paul is talking about spiritual maturity, not sinless perfection.

The Christian life is not about claiming you have arrived. It is about growing consistently in what God has already revealed to you.

Today we are going to see that spiritual maturity is not measured by how much you know but by how faithfully you live according to the truth you already know.

Scripture Reading

Philippians 3:15–16 NIV

15 All of us, then, who are mature should take such a view of things. And if on some point you think differently, that too God will make clear to you. 16 Only let us live up to what we have already attained.

Mature Believers Share the Same Mindset (v.15)

Paul writes:

“Let us therefore, as many as be perfect, be thus minded.”

The word translated perfect does not mean flawless.

The Greek word teleios refers to something that has reached maturity or full development.

It is the difference between a child and an adult.

A child is still growing. An adult has reached maturity, even though they still continue to grow in knowledge and wisdom.

Paul is saying: “If you are spiritually mature, you should think the way I just described.”

What mindset did Paul just describe?

The mindset of pressing forward toward Christ.

Look back at the previous verses.

Paul said:

He forgets what is behind

He reaches forward to what is ahead

He presses toward the goal for the prize of the upward call of God in Christ.

That is the mindset of maturity.

Mature believers understand three important things:

1. They have not arrived

Immature believers think they have reached the finish line.

Mature believers understand that the Christian life is a lifelong race.

Paul knew Christ intimately. Yet he still wanted more of Christ.

2. They refuse to live in the past

Paul had an impressive past:

Circumcised on the eighth day

Of the tribe of Benjamin

A Pharisee

Blameless under the law

But Paul counted all of that as loss for Christ.

Mature believers do not live in past achievements.

They also do not live in past failures.

They keep moving forward.

3. They pursue Christ above everything else

The mature Christian understands that knowing Christ is the greatest treasure in life.

That is why Paul presses on.

Mature Believers Remain Teachable (v.15)

Paul continues: Philippians 3:15 “And if you think differently about anything, God will reveal this also to you.”

This is one of the most gracious statements Paul makes in this letter.

Paul recognizes something important about the church.

Believers do not all grow at the same speed.

Some people mature quickly. Others take longer.

Some believers understand certain truths clearly. Others are still learning.

Paul does not demand instant perfection.

Instead he says: “God will reveal it to you.”

That is an incredible expression of confidence in the work of God.

Spiritual growth is not merely human effort.

It is the work of the Holy Spirit illuminating truth.

Jesus said in John 16:13:

John 16:13 CSB

13 When the Spirit of truth comes, he will guide you into all the truth. For he will not speak on his own, but he will speak whatever he hears. He will also declare to you what is to come.

“When He, the Spirit of truth, has come, He will guide you into all truth.”

Mature believers understand this.

They remain teachable.

One of the clearest signs of immaturity is the belief that you already know everything you need to know.

But mature believers recognize something:

The closer you get to Christ, the more you realize how much more there is to learn.

Spiritual maturity is not arrogance.

It is humility.

It is the attitude that says: “Lord, continue to teach me.”

Mature Believers Walk Consistently With What They Know (v.16)

Paul then gives a very practical instruction.

Philippians 3:16 “16 In any case, we should live up to whatever truth we have attained.”

The key word here is “live up to” (stoicheō)

The Greek word Paul uses carries the idea of marching in line or keeping step, like soldiers moving together.

Paul is saying: “Live consistently with the truth you have already received.”

This is incredibly practical.

Many Christians think they need new information in order to grow.

But often the real issue is not a lack of knowledge.

The real issue is a lack of obedience.

Most believers already know far more truth than they are currently applying.

Think about it.

We know we should:

Pray

Study Scripture

Forgive others

Love our neighbors

Serve the church

Share the gospel

The problem is rarely ignorance.

The problem is inconsistency.

Paul says maturity means walking in the truth you have already attained.

Not waiting until you understand everything.

But faithfully obeying what you already know.

Imagine a soldier marching in formation.

The soldier does not need to understand the entire military strategy.

His responsibility is simply to keep step with the unit.

If he breaks formation, the entire group suffers.

Paul is saying the Christian life is similar.

God has already given us direction through His Word.

Our responsibility is to walk faithfully in that direction.

Mature Believers Maintain Unity (v.16)

Paul ends the verse with a call for unity. “Let us mind the same thing.”

The Christian life is not meant to be lived in isolation.

It is lived within the community of believers.

The phrase Paul uses emphasizes shared direction.

Believers may differ on secondary issues.

But we must remain united in the central pursuit.

What is that pursuit? Christ Himself.

Earlier in this chapter Paul warned about false teachers who focused on external religious achievements.

But the true believer is focused on knowing Christ and becoming like Him.

When believers share that goal, unity follows naturally.

Next Steps

Paul’s message in these two verses is incredibly practical.

Spiritual maturity looks like three things.

1. Keep pursuing Christ

Never assume you have arrived.

No matter how long you have walked with the Lord, there is always more growth ahead.

2. Stay humble and teachable

God continues to shape us through His Word, His Spirit, and His people.

Remain open to correction and growth.

3. Walk in the truth you already know

You do not need more information before you obey God.

Live faithfully in the light He has already given you.

Next Steps

The Christian life is not about reaching a moment where you can say:

“I have finally arrived.”

Instead it is about continually pressing forward toward Christ.

Maturity is not perfection.

Maturity is consistent obedience to the truth God has already revealed.

It is the believer who says:

“I may not know everything yet… but I will faithfully walk in the light God has given me today.”

Pray

Invitation

Maybe today you realize something.

You know the truth of the gospel.

You know that Jesus Christ died for your sins and rose again.

But you have never responded in faith.

Today is the day to take that step.

Scripture says that salvation comes through repentance and faith in Jesus Christ.

If God is calling you today, respond to Him.

And for those who are believers, maybe the Lord is showing you something else.

Perhaps there is an area of your life where you already know what God has said.

But you have not been walking in it.

The call of this passage is simple:

Walk in the truth you have already received.

Press forward toward Christ.

And keep running the race until the day we stand before Him.

Listener Notes

Philippians: The Pursuit of Joy Mature Conduct Philippians 3:15–16

Theme

Spiritual maturity means living consistently with the truth we know.

Key Idea

Maturity is not claiming we have arrived. It is faithfully walking in the truth God has already revealed.

1. Mature Believers Share the Same Mindset

Philippians 3:15

“Let us therefore, as many as be perfect, be thus minded…”

“Perfect” refers to spiritual maturity, not sinless perfection.

Mature believers:

Recognize they have not yet arrived

Refuse to live in past successes or failures

Continue pressing forward toward Christ

Philippians 3:13–14

Reflection: What does it look like in your life to keep pressing toward Christ?

2. Mature Believers Remain Teachable

Philippians 3:15

“If in anything you think otherwise, God will reveal even this to you.”

Spiritual maturity includes:

Humility

Openness to correction

Confidence that God continues to guide His people

The Holy Spirit continues shaping believers through:

Scripture

The church

Life experience

Reflection: Is there an area where God may still be correcting your thinking?

3. Mature Believers Walk in the Truth They Know

Philippians 3:16

“Let us walk by the same rule…”

The Greek word implies keeping step together, like soldiers marching.

Maturity is not just learning truth but living according to it.

Often the issue is not lack of knowledge but lack of obedience.

Examples of truth believers already know:

Pray regularly

Study Scripture

Forgive others

Love your neighbor

Serve the church

Share the gospel

Reflection: What truth has God already shown you that you need to act on?

4. Mature Believers Maintain Unity

Philippians 3:16

“Let us mind the same thing.”

Believers grow at different speeds, but they should remain united in the same direction.

The shared goal of the Christian life is:

Knowing Christ and becoming like Him.

Reflection: How can you encourage unity in the church while pursuing spiritual growth?

Questions for Further Discussion

Why does Paul describe mature believers as those who recognize they have not arrived spiritually?

What are some signs of spiritual pride that can hinder growth?

How does humility help believers continue maturing in their faith?

Why is it important to live according to the truth we already know?

What does it look like for a church to stay united while believers grow at different rates?

What practical step can you take this week to walk more faithfully in the truth God has shown you?

Bibliography

Barton, Bruce B., Grant Osborne, Philip Comfort, and Linda Taylor. Life Application New Testament Commentary. Wheaton, IL: Tyndale, 2001.

Butler, John G. Analytical Bible Expositor: Galatians–Philemon. Clinton, IA: LBC Publications, 2009.

Comfort, Philip W. New Testament Text and Translation Commentary. Carol Stream, IL: Tyndale House Publishers, 2008.

Foulkes, Francis. “Philippians.” In New Bible Commentary: 21st Century Edition, edited by D. A. Carson et al. Downers Grove, IL: InterVarsity Press, 1994.

Gilbrant, Thoralf. “Στοιχέω.” In The New Testament Greek-English Dictionary. WORDsearch, 1991.

Gromacki, Robert. Philippians and Colossians: Joy and Completeness in Christ. AMG Publishers, 2003.

Haley, John. Alleged Errors of the Bible: Addressing Problematic Passages in Scripture. Whitaker House, 2019.

Holloway, Paul A. Philippians: A Commentary. Hermeneia Series. Minneapolis: Fortress Press, 2017.

Lightner, Robert P. “Philippians.” In The Bible Knowledge Commentary. Edited by John Walvoord and Roy Zuck. Wheaton, IL: Victor Books, 1985.

McDowell, Josh, and Sean McDowell. The Bible Handbook of Difficult Verses. Eugene, OR: Harvest House, 2013.

Robertson, A. T. Word Pictures in the New Testament. Nashville: Broadman Press, 1933.

Runge, Steven E. High Definition Commentary: Philippians. Bellingham, WA: Lexham Press, 2011.

Strauss, Lehman. Devotional Studies in Philippians. Horizon Press, 1976.

Swindoll, Charles R. Philippians, Colossians, Philemon. Living Insights Commentary. Carol Stream, IL: Tyndale House Publishers, 2017.

3–4 Day Bible Study

Mature Conduct Philippians 3:15–16

Day 1: What Spiritual Maturity Really Means

Read Philippians 3:12–15

Paul says mature believers recognize they have not yet reached perfection. Spiritual maturity is not arrogance about how far we have come. Instead, it is humility that keeps pressing forward toward Christ.

The Greek word teleios translated “perfect” means mature or fully developed. Paul uses it to describe believers who understand that growth never stops.

Reflection Questions

Why is humility essential to spiritual maturity?

What areas of your life still need growth in Christlikeness?

Life Application

Ask God to give you a heart that continues pursuing Christ rather than becoming spiritually complacent.

Day 2: The Importance of a Teachable Spirit

Read Philippians 3:15

Paul acknowledges that believers sometimes think differently. Yet he expresses confidence that God will reveal truth over time.

The Christian life involves both conviction and humility. We must hold firmly to the truth of Scripture while remaining open to God’s ongoing instruction.

Reflection Questions

When have you experienced God correcting your understanding?

How can believers remain both confident and teachable?

Life Application

Pray that the Holy Spirit would continue guiding your understanding through Scripture.

Day 3: Walking in the Truth You Already Know

Read Philippians 3:16

Paul tells believers to walk according to what they have already attained.

The Greek word stoicheō refers to marching in line or keeping step. It paints the picture of believers living consistently with the truth they have already received.

Growth does not always require new information. Often it requires faithful obedience.

Reflection Questions

What truth from Scripture do you already know but struggle to apply?

How does obedience deepen spiritual maturity?

Life Application

Choose one biblical truth you already know and intentionally practice it this week.

Day 4: Pursuing Christ Together

Read Philippians 3:15–16

Paul emphasizes unity among believers who are pursuing Christ.

Even when believers grow at different speeds or understand things differently, they can remain united around the central pursuit of Christ.

Reflection Questions

Why is unity important for spiritual growth within the church?

How can you encourage other believers in their spiritual journey?

Life Application

Encourage another believer this week in their pursuit of Christ.

YouTube Description

Mature Conduct | Philippians 3:15–16 | Philippians: The Pursuit of Joy

What does spiritual maturity really look like?

In Philippians 3:15–16, the apostle Paul explains that maturity is not about claiming we have arrived spiritually. Instead, it means continuing to pursue Christ while faithfully living according to the truth God has already revealed.

In this message we explore:

• What Paul means by “perfect” or mature believers • Why humility is essential for spiritual growth • How believers should walk consistently in the truth they already know • Why unity matters as the church grows together

The Christian life is not about reaching perfection but about continually pressing forward toward Christ.

Scripture: Philippians 3:15–16

If this message encourages you, be sure to like, subscribe, and share it with someone who needs encouragement in their walk with Christ.

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