This verse sits inside the father's warning about standing surety, Proverbs 6:1–5.
Quick answer
The verse says the same thing twice on purpose. What caught this man was not bad luck or a dishonest partner. It was his own sentence, spoken freely.
Read the whole unit
After a long lecture, the chapter drops into short, urgent bursts, and the first one is about money. A man has guaranteed someone else's debt. The NKJV calls it becoming "surety," and footnotes the term as guaranty or collateral: he has put himself on the hook for an obligation he did not create and cannot control. The second line names the gesture that sealed it. "Shaken hands in pledge" is literally struck, a handshake with legal force, and the same phrase turns up every time Proverbs returns to this subject.
It returns often. The book warns about standing surety at 11:15, 17:18, 20:16, and 22:26–27, always with the same two elements: the struck hand and the stranger's debt. Whatever else Proverbs is relaxed about, it is not relaxed about this.
The counsel that follows is the most frantic in the book. There is no meditation, no weighing, no waiting for morning. Go, humble yourself, plead, give your eyes no sleep, get out the way an animal gets out of a trap. Two escape images close the unit, a gazelle twisting free of a hand and a bird breaking from a fowler's snare, and both of them are pictures of something that has already been caught.
One clarification belongs here, because this unit has been read as a rule against generosity and it is not one. The father is not telling his son to stop helping people. He is telling him not to pledge what he does not have against a risk he cannot see, on behalf of a stranger, with a handshake that binds him to an outcome that belongs to somebody else. Generosity gives what it has. Surety promises what it may not have. Proverbs is enthusiastic about the first and alarmed about the second, and the difference is not warmth, it is exposure.
There is one more thing to say, and it is worth saving until the wisdom has been heard on its own terms. The word the NKJV chooses here for the trapped man, surety, is the same word it chooses at Hebrews 7:22, with the same footnote: guarantee. Proverbs says never become the guarantee for a debt that could ruin you. Hebrews says Jesus became the surety of a better covenant. The proverb is not secretly about Him, and its warning stays exactly as practical as it sounds. But the vocabulary lands where it lands, and it is worth noticing that the one thing Proverbs tells you never to do for a stranger is the thing God did for us, with full knowledge of the price.
What this verse contributes
This verse locates the snare, and the repetition is the point: snared by the words of your mouth, taken by the words of your mouth. Hebrew poetry usually varies its second line, and the refusal to vary here reads like a man saying the same thing over because he cannot get past it. What makes the picture sting is that nothing was stolen from him. He was not deceived into the pledge. He opened his mouth, and the trap was made of what came out.
What it does not mean
This is not the claim that words carry creative power, that a spoken sentence can call a circumstance into being, or that a person's hardship can be traced to something they once said. Words shape a life; they do not create a covenant, and Proverbs is describing a legal obligation, not a metaphysical one. This man is bound because a real promise made him liable for a real debt.
Related: Proverbs 18:21 · Proverbs 12:13
New King James Version®, Copyright © 1982, Thomas Nelson. All rights reserved. Full copyright information. Scripture provided by API.Bible.
Go Deeper
If this verse has been used to put weight on you that it was never carrying, ask about it directly.