Albert Barnes Commentary Psalms 119:156

"Great are thy tender mercies, O Jehovah: Quicken me according to thine ordinances." — Psalms 119:156 (ASV)

Great are thy tender mercies, O Lord - They are many, or multiplied. The word rendered “tender mercies” is the same which occurs in (Psalms 40:11); (Psalms 51:1); (Psalms 69:16); (Psalms 79:8); (Psalms 103:4). See the notes at (Psalms 25:6).

Quicken me ... - See (Psalms 119:149).