Albert Barnes Commentary Psalms 40:13

"Be pleased, O Jehovah, to deliver me: Make haste to help me, O Jehovah." — Psalms 40:13 (ASV)

Be pleased, O Lord, to deliver me - That is, in these troubles and sorrows. See (Matthew 26:39). The prayer is that, if possible, the cup of sorrow might be taken away.

O Lord, make haste to help me - This is the same form of prayer, and referring, I suppose, to the same occasion as that which occurs in (Psalms 22:19). See the notes at that verse.