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

Psalms 88:30

And I will establish his seed for ever and ever, and his throne as the days of heaven.

Parallel Translations

LXX2012View canonical →
If his children should forsake my law, and walk not in my judgments;
Septuagint in American English (2012)