Berean Study Bible
Be careful to follow through on what comes from your lips, because you have freely vowed to the LORD your God with your own mouth.

King James Bible
That which is gone out of thy lips thou shalt keep and perform; even a freewill offering, according as thou hast vowed unto the LORD thy God, which thou hast promised with thy mouth.

American Standard Version
That which is gone out of thy lips thou shalt observe and do; according as thou hast vowed unto Jehovah thy God, a freewill-offering, which thou hast promised with thy mouth.

Darby Bible Translation
What is gone out of thy lips thou shalt keep and do, as thou hast vowed to Jehovah thy God, the voluntary-offering that thou hast promised with thy mouth.

Douay-Rheims Bible
But that which is once gone out of thy lips, thou shalt observe, and shalt do as thou hast promised to the Lord thy God, and hast spoken with thy own will and with thy own mouth.

English Revised Version
That which is gone out of thy lips thou shalt observe and do; according as thou hast vowed unto the LORD thy God, a freewill offering, which thou hast promised with thy mouth.

Young's Literal Translation
The produce of thy lips thou dost keep, and hast done it, as thou hast vowed to Jehovah thy God; a free-will-offering, which thou hast spoken with thy mouth.