'Belongs to you', meaning God. This statement is in Paul's
letter to the Romans, ch.12 & v.19, and reads thus:
" Dearly beloved, avenge not yourselves, but [rather] give place
unto wrath: for it is written, Vengeance [is] mine; I will repay,
saith the Lord."
Paul here refers to the Law of Moses in Deuteronomy 32.35:
" To me [belongeth] vengeance, and recompense;"