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

Psalms 88:29

I will keep my mercy for him for ever, and my covenant [shall be] firm with him.

Parallel Translations

LXX2012View canonical →
And I will establish his seed for ever and ever, and his throne as the days of heaven.
Septuagint in American English (2012)