Coram Deo

Matthew 5:33–37 — "Coram Deo"

Sermon-in-a-sentence: Jesus removes every hiding place for our speech — all of creation is his, so all of your words are before his face.

Opening — The wrong question, a fourth time

As we dive back into the book of Matthew, more specifically into the Sermon on the Mount, today we will find more of the same. More of Jesus addressing the moral law. A few weeks ago, we saw Jesus reaching back into the OT Law, displaying that the larger commandments like do not murder, do not commit adultery, do not covet your neighbor's wife are not simply about the physical commission of the act, but about the heart. This wasn't something new. As we read through the law given, especially in Deuteronomy, the command has already been given against anger in the heart, against lust, and redirected us in divorce to His created order. The law is indeed about what you say with your mouth, and what you do with your hands, but also, the law is about all of the sins in our hearts that come before the hand or the mouth.

Today, we will be continuing in this same lane of teaching by Jesus on a new topic, oaths, or more directly, truth-telling. While the language of oaths is foreign to us, and in many areas of our culture, the more familiar word "vow" has been emptied of its meaning. When we bring up the topic of telling the truth, we're quickly met by a blast of justifications. "It was just a white lie." "They'll never find out." "They never asked me directly." We have come up with our own formulas and sentence structure where we are not bound by our words. This is the context that Jesus is speaking into as we read Mattew 5:33-37.

Read Matthew 5:33-37

Movement 1 — What was said (v. 33): the legitimate weight of a word

Every time Jesus says, “You have heard that it was said, Jesus is quoting an OT passage. Here, these two separate statements are never quoted directly together, but the first statement about oaths, “You shall not swear falsely,” is a direct quotation from Leviticus 19:12.

Leviticus 19:12 “You shall not swear by my name falsely, and so profane the name of your God: I am the Lord.”

The second statement, “but shall perform to the Lord what you have sworn.” is a summary of many other laws given in the OT. Here are two examples:

Numbers 30:2 “If a man vows a vow to the Lord, or swears an oath to bind himself by a pledge, he shall not break his word. He shall do according to all that proceeds out of his mouth.”

Deuteronomy 23:21–23 ““If you make a vow to the Lord your God, you shall not delay fulfilling it, for the Lord your God will surely require it of you, and you will be guilty of sin. But if you refrain from vowing, you will not be guilty of sin. You shall be careful to do what has passed your lips, for you have voluntarily vowed to the Lord your God what you have promised with your mouth.”

We see vows and oaths all over Scripture, and here, God is giving explicit instructions on how we are to act when a vow is taken or an oath is sworn. Quickly, I’d like to give a definition of both vows and oaths because I think it’s helpful context to have in our minds since those aren’t words we use much today.

Vow — a voluntary promise made to God, to do or to abstain.

Oath — a solemn declaration invoking God (or something) as witness or guarantor to the truth of what you say.

Jesus is abolishing neither. We still vow — a baby dedication, marriage. Scripture still affirms truth solemnly.

Movement 2 — The evasion (the graded-oath system)

This is "where's the line?" applied to speech. People sought words far enough from God to sound committed while staying unbound — swear by the temple, free; by the gold, bound.

Matthew 23:16–22 ““Woe to you, blind guides, who say, ‘If anyone swears by the temple, it is nothing, but if anyone swears by the gold of the temple, he is bound by his oath.’ You blind fools! For which is greater, the gold or the temple that has made the gold sacred? And you say, ‘If anyone swears by the altar, it is nothing, but if anyone swears by the gift that is on the altar, he is bound by his oath.’ You blind men! For which is greater, the gift or the altar that makes the gift sacred? So whoever swears by the altar swears by it and by everything on it. And whoever swears by the temple swears by it and by him who dwells in it. And whoever swears by heaven swears by the throne of God and by him who sits upon it.”

These Pharisees were sinners doing the natural human thing — managing a technicality instead of asking what brings God glory. The error is ours by nature, not theirs uniquely.

The whole system assumes there is neutral ground — speech God does not hear.

Movement 3 — The demolition (vv. 34–36): no neutral ground (doctrinal core)

Walk the four examples as a , not a list: single argument

Heaven — his throne.

Earth — his footstool.

Jerusalem — the city of the great King.

Your own head — not even yours; you cannot turn one hair white or black.

The evasion fails not on a technicality but at its root there is nothing you can swear by that isn't already God's. — neutral ground never existed.

Jesus removes every hiding place for our speech — all of creation is his, so all of your words are before the face of God.

Movement 4 — The alternative (v. 37): why "yes" is enough

"Yes/yes, no/no" precisely because the Witness is omnipresent and owns everything you might invoke. You don't summon a witness; he's already there.

We can take this to mean that not only should we not swear an oath or a vow, but actually, we shouldn’t emphasize the truth at all, since anything more comes from evil.

Two clarifications belong here, both flowing from the guardrail in Movement 1:

Jesus says "truly, truly"

Paul calls God as witness:

Romans 1:9 “For God is my witness, whom I serve with my spirit in the gospel of his Son, that without ceasing I mention you in my prayers”

2 Corinthians 1:23 “But I call God to witness against me—it was to spare you that I refrained from coming again to Corinth.”

Galatians 1:20 “(In what I am writing to you, before God, I do not lie!)”

Philippians 1:8 “For God is my witness, how I yearn for you all with the affection of Christ Jesus.”

The point is not fewer words but true words. Emphasis is not the sin; evasion is. Not a ban on emphasis.

Simple yes, emphatic affirmation, formal vow — bound the same. The old system built tiers of obligation; Christ collapses them. Integrity is whole-person, not graduated.Equal bindingness.

Movement 5 — Why God cares this much (the theological arc) (doctrine deepening toward the gospel turn)

Pivot from what to why. Truthfulness is not merely social glue.

God keeps his word — his word to his people holds. Keep the covenant survey to two or three touchpoints that each demonstrate (this is the part most tempted to sprawl — discipline it hard): God is a truth-telling, covenant-keeping God

A promissory covenant kept (e.g., Abrahamic — Gen 12 / 15).

God binding by oath (

Hebrews 6:13–18 “For when God made a promise to Abraham, since he had no one greater by whom to swear, he swore by himself, saying, “Surely I will bless you and multiply you.” And thus Abraham, having patiently waited, obtained the promise. For people swear by something greater than themselves, and in all their disputes an oath is final for confirmation. So when God desired to show more convincingly to the heirs of the promise the unchangeable character of his purpose, he guaranteed it with an oath, so that by two unchangeable things, in which it is impossible for God to lie, we who have fled for refuge might have strong encouragement to hold fast to the hope set before us.”

2 Corinthians 1:20 “For all the promises of God find their Yes in him. That is why it is through him that we utter our Amen to God for his glory.”

The reason you are to let your yes be yes is because you bear his image. Made to reflect his character, including truthfulness. A lie is therefore not just a broken rule — it is an image-bearer misrepresenting the God he was made to display.

Capstone — Only the Spirit makes you true

The turn: everything to this point has exposed that you are not, in yourself, a person whose yes is yes. Same as anger, lust, divorce — conviction, exposure, nowhere to hide. We live our life Coram Deo, before the face of God

that conviction is meant to drive you to the cross, not to a better technique. Two roads — pacify and distract yourself, or bring the sin to Jesus and have it removed.

you cannot keep your word truthfully apart from the Spirit's work. Then he conforms you to the Son, and one fruit of that conforming is a word that holds. Self-denial, not self-improvement. The transforming work begins at salvation; it does not end there.

leaving it at the cross means naming the specific lie, refusing the distraction you'd normally reach for, and turning from it in dependence on the Spirit rather than resolve.

all your words are before his face — and the same God who sees them is the one who, by his Spirit, makes you able to mean them.

Jesus removes every hiding place for our speech — all of creation is his, so all of your words are before his face.