Numbers 30:1-2

New King James Version

The Law Concerning Vows

30 Then Moses spoke to ^(A)the heads of the tribes concerning the children of Israel, saying, “This is the thing which the Lord has commanded: ^2 (B)If a man makes a vow to the Lord, or ^(C)swears an oath to bind himself by some agreement, he shall not break his word; he shall ^(D)do according to all that proceeds out of his mouth.