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

Psalms 118:171

Let my lips utter a hymn, when thou shalt have taught me thine ordinances.

Parallel Translations

LXX2012View canonical →
Let my lips utter a hymn, when you shall have taught me your ordinances.
Septuagint in American English (2012)