A Church on Mission

Opening & Intro

A few years ago, I joined a gym. I was very committed… at least in theory. I signed the forms, got the fancy key tag, downloaded the app, told everyone I was “starting a new chapter,” and even bought a water bottle I never used.

“I did go occasionally — just often enough to convince myself I was ‘the kind of person who works out.’” Basically, my gym membership became a monthly donation to people who actually work out.

And on the odd time that I did go, I didn’t even use it the right way — I treated it like a moral free pass. I’d leave the gym thinking, “Well, I earned this,” and go home and eat an entire pizza.

Technically, I belonged to the gym. Practically, nothing in my life changed.

It made me realize how easy it is to join something and never really live it. You can have the card, the label, the membership — and still never live the life.

That raises a slightly uncomfortable question for us as a church: Is it possible to “join” Jesus, or belong to a church, and still never really step into the life and mission he actually calls us into?

That’s what I want us to wrestle with this morning because Jesus makes this crystal clear in our passage.

Main Point

To belong to Jesus is to be sent by Jesus — together.

Why Does it Matter

God did not give us this building to settle in — he gave it to send us out. That means this building is not our finish line — it’s our launching pad. This building exists so more people can meet Jesus, grow in Jesus, and be sent with Jesus.

Scripture

Matthew 28:16–20 NIV

Then the eleven disciples went to Galilee, to the mountain where Jesus had told them to go. When they saw him, they worshiped him; but some doubted. Then Jesus came to them and said, “All authority in heaven and on earth has been given to me. Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age.”

We are a sent people. What does that mean? Thank you for asking.

The Great Commission shows us four marks of a sent people.

Point 1 — Sent people obey (v.16)

First, sent people obey Jesus.

Verse 16 tells us the disciples went to the mountain where Jesus told them to go. That detail matters in Matthew — Jesus often meets his people on mountains at decisive moments..

But the key point is simple: they obeyed.

They went where Jesus told them to go even before they fully understood what would happen there. Being sent begins with simple obedience — going where Jesus directs.

Belonging to Jesus means trusting his direction, even when the outcome isn’t clear.

Point 2 — Sent people worship (even with doubt) (v.17–18)

Second, sent people worship — even when it feels complicated.

Matthew says something surprising: they worshipped him, but some doubted.

That doesn’t mean they didn’t believe. The word for “doubt” (distazo) is the same word used when Peter walked on water.

Peter didn’t fail — he actually walked on water — but when he took his eyes off Jesus, fear set in.

That’s what’s happening here. The disciples were overwhelmed, caught between awe and uncertainty. After abandoning Jesus before the crucifixion, some may have wondered how he would receive them.

Still, they came. Still, they worshipped.

That’s church. Sometimes we come carrying doubt, guilt, or confusion — and that’s often when we most need to meet the risen Christ.

In verse 18 when Jesus says, “All authority in heaven and on earth has been given to me,” he is intentionally echoing Daniel 7. He is claiming to be the Son of Man who receives universal authority from God.

Because Jesus is Lord of all, worship naturally leads to mission.

Point 3 — Sent people make disciples (v.19)

Third, sent people make disciples.

“Therefore, go and make disciples of all nations.”

Jesus isn’t calling us to make church projects — he’s calling us to reproduce a kind of life. To make a disciple means helping someone grow in living faith, real obedience, compassion, Christlike love, and truthful witness.

Discipleship is not information transfer — it is life formation. We don’t just want people to know about Jesus; we want them to walk with Jesus.

The mission is global — all nations — which would have felt overwhelming to the disciples. God’s grace is bigger than they imagined.

Penn Jillette — a famous magician and outspoken atheist — once met a man after one of his shows who calmly and kindly gave him a Bible. Jillette didn’t convert, but he deeply respected the man.

He later said:

“I don’t respect people who don’t proselytize. If you really believe there is a heaven and hell, and you think it’s not worth telling people because it might be socially awkward — how much do you have to hate someone to believe everlasting life is possible and not tell them that?”

Here’s what I take from that — and it brings us back to Jesus’ heart: making disciples isn’t about being annoying or winning arguments.

Love moves us toward people, not away from them.

Because Jesus is Lord of all, his mission is for all.

Jesus has opened the door wide, saying, “Come in — and then help others find their way home.”

Point 4 — Sent people trust Jesus’ presence (v.20)

Finally, sent people trust Jesus’ presence.

Jesus doesn’t stop with baptism — he adds teaching. But teaching here means obedience, not just ideas. We are to teach people to actually live out what Jesus commanded.

That’s why discipleship is not a program — it is a way of life together as God’s people.

Then Jesus gives the promise that holds the whole mission together: “I am with you always, to the very end of the age.”

This is covenant language. Throughout the Old Testament, when God sent his people, he went with them. Now Jesus makes that promise in his own name.

His presence gives us courage, endurance, and confidence to actually live this out.

Application

Because to belong to Jesus is to be sent by Jesus — together:

Be a disciple — not just an attender. Take one real step this week to be formed by Jesus — join a group, commit to daily Scripture, or meet regularly with one other believer. (Sent people obey and learn.)

Walk with someone — don’t “work on” someone. Pay attention to the relationships already in your life. Love people well, listen deeply, and when the moment is right, speak honestly about Jesus and invite them into your life of faith. (Sent people make disciples.)

Live obediently in everyday life. Ask this week, “Where is Jesus calling me to obey?” — in forgiveness, generosity, integrity, relationships, or service — and take one concrete step. (Sent people obey.)

If Jesus evaluated Cornerstone by our obedience to the Great Commission, what would he celebrate — and what would he challenge?

Closing

Membership is not just about belonging — it is about being formed by Jesus and sent with Jesus.