Commentaries
109:1-5. It is the unspeakable comfort of all believers, that whoever is against them, God is for them; and to him they may apply as to one pleased to concern himself for them. David's enemies laughed at him for his devotion, but they could not laugh him out of it.
4, 5. They return evil for good (compare Ps 27:12; Pr 17:13).
I give myself unto prayer—or literally, "I (am) prayer," or, "as for me, prayer," that is, it is my resource for comfort in distress.