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

Psalms 118:173

Let your hand be [prompt] to save me; for I have chosen your commandments.

Parallel Translations

LXXView canonical →
Let thine hand be [prompt] to save me; for I have chosen thy commandments.
Brenton's Septuagint Translation