Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX2012

Psalms 88:31

if they should profane my ordinances, and not keep my commandments;

Parallel Translations

LXXView canonical →
If his children should forsake my law, and walk not in my judgments;
Brenton's Septuagint Translation