Charles H. Spurgeon on Psalms 109:22

For I am poor and needy. When he does plead anything about himself he urges not his riches or his merits, but his poverty and his necessities: this is gospel supplication, such as only the Spirit of God can indite upon the heart. This lowliness does not comport with the supposed vengeful spirit of the preceding verses: there must therefore be some interpretation of them which would make them suitable in the lips of a lowly minded man of God. And my heart is wounded within me. The Lord has always a tender regard to broken hearted ones, and such the psalmist had become: the undeserved cruelty, the baseness, the slander of his remorseless enemies had pierced him to the soul, and this sad condition he pleads as a reason for speedy help. It is time for a friend to step in when the adversary cuts so deep. The case has become desperate without divine aid; now, therefore, is the Lord's time.