New Revised Standard Version
But if you do not do this, you have sinned against the LORD; and be sure your sin will find you out.

Contemporary English Version
But if you don't keep your promise, you will sin against the LORD and be punished.

New American Bible
But if you do not do this, you will have sinned against the LORD, and you can be sure that the consequences of your sin will overtake you.

Douay-Rheims Bible
But if you do not what you say, no man can doubt but you sin against God: and know ye, that your sin shall overtake you.

But if you do not what you say, no man can doubt but you sin against God: and know ye, that your sin shall overtake you.

if ye will

Leviticus 26:14 But if you will not hear me, nor do all my commandments:

Deuteronomy 28:15 But if thou wilt not hear the voice of the Lord thy God, to keep and to do all his commandments and ceremonies, which I command thee this day, all these curses shall come upon thee, and overtake thee.

be sure your sin.

Genesis 4:7 If thou do well, shalt thou not receive? but if ill, shall not sin forthwith be present at the door? but the lust thereof shall be under thee, and thou shalt have dominion over it.

Genesis 44:16 And Juda said to him: What shall we answer my lord? or what shall we say, or be able justly to allege? God hath found out the iniquity of thy servants: behold, we are all bondmen to my lord, both we, and he with whom the cup was found.

Psalm 90:8 Thou hast set our iniquities before thy eyes: our life in the light of thy countenance.

Psalm 139:11 And I said: Perhaps darkness shall cover me: and night shall be my light in my pleasures.

Psalm 140:11 A man full of tongue shall not be established in the earth: evil shall catch the unjust man unto destruction.

Proverbs 13:21 Evil pursueth sinners: and to the just good shall be repaid.

Isaiah 3:11 Woe to the wicked unto evil: for the reward of his hands shall be given him.

Isaiah 59:1,2,12 Behold the hand of the Lord is not shortened that it cannot save, neither is his ear heavy that it cannot hear. . . .

Romans 2:9 Tribulation and anguish upon every soul of man that worketh evil: of the Jew first, and also of the Greek.

1 Corinthians 4:5 Therefore, judge not before the time: until the Lord come, who both will bring to light the hidden things of darkness and will make manifest the counsels of the hearts. And then shall every man have praise from God.