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

Psalms 70:18

even until I am old and advanced in years. O God, forsake me not; until I shall have declared thine arm to all the generation that is to come:

Parallel Translations

LXX2012View canonical →
even until I am old and advanced in years. O God, forsake me not; until I shall have declared your arm to all the generation that is to come:
Septuagint in American English (2012)
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