Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX

Psalms 88:31

If his children should forsake my law, and walk not in my judgments;

Parallel Translations

LXX2012View canonical →
if they should profane my ordinances, and not keep my commandments;
Septuagint in American English (2012)