Jamieson, Fausset and Brown on Psalms 22:25-26

25-26. My praise shall be of thee--or, perhaps better, "from thee," that is, God gives grace to praise Him. With offering praise, he further evinces his gratitude by promising the payment of his vows, in celebrating the usual festival, as provided in the law (De 12:18; 16:11), of which the pious or humble, and they that seek the Lord (His true worshippers) shall partake abundantly, and join him in praise [Psa 22:26]. In the enthusiasm produced by his lively feelings, he addresses such in words, assuring them of God's perpetual favor [Psa 22:26]. The dying of the heart denotes death (1Sa 25:37); so its living denotes life.