American Standard Version
When thou shalt vow a vow unto Jehovah thy God, thou shalt not be slack to pay it: for Jehovah thy God will surely require it of thee; and it would be sin in thee.

Berean Study Bible
If you make a vow to the LORD your God, do not be slow to keep it, because He will surely require it of you, and you will be guilty of sin.

Douay-Rheims Bible
When thou hast made a vow to the Lord thy God, thou shalt not delay to pay it: because the Lord thy God will require it. And if thou delay, it shall be imputed to thee for a sin.

English Revised Version
When thou shalt vow a vow unto the LORD thy God, thou shalt not be slack to pay it: for the LORD thy God will surely require it of thee; and it would be sin in thee.

King James Bible
When thou shalt vow a vow unto the LORD thy God, thou shalt not slack to pay it: for the LORD thy God will surely require it of thee; and it would be sin in thee.

World English Bible
When you shall vow a vow to Yahweh your God, you shall not be slack to pay it: for Yahweh your God will surely require it of you; and it would be sin in you.

Young's Literal Translation
'When thou vowest a vow to Jehovah thy God, thou dost not delay to complete it; for Jehovah thy God doth certainly require it from thee, and it hath been in thee -- sin.

Deuteronomy 23:21 Additional Translations ...