This verse opens the father's warning about standing surety, Proverbs 6:1–5. Both key terms carry translator footnotes.
Quick answer
The situation, laid out in a single sentence: you have guaranteed someone else's debt and sealed it with a handshake. Everything that follows in this short passage assumes it has already happened.
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 defines the trap before describing the escape, and the footnotes do most of the defining. "Surety" is footnoted guaranty or collateral, so the man has not lent money; he has become the collateral. "Shaken hands" is literally struck, the ancient equivalent of a signature. Notice who the two parties are. The pledge is made for a friend, and it is made to a stranger, which means the relationship that motivated the promise is not the relationship that will collect on it. That gap is the whole problem, and it is why the next four verses move at a run.
Related: Proverbs 11:15 · Proverbs 17:18 · Proverbs 22:26–27
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.