shield; to protect and defend him; as were the love, power, and faithfulness of God, and the Lord Jesus Christ, his power and fulness, his blood, righteousness, and salvation; my heart trusted in him; in the Lord as his strength and shield; not in any creature, nor in his own strength and righteousness; but in the Lord God, in whom are righteousness and strength: and it is plain he did not trust in his own heart, since his heart trusted in the Lord; and which shows that his trust was an hearty one, his faith was a faith unfeigned, he believed with the heart unto righteousness; and I am helped: this was the fruit of his trust, even a gracious experience of divine assistance: saints are helpless in themselves, and are also as to the help of man; God is the only helper of them; he helps them out of all their troubles; in whatsoever he calls them unto, and to what they want; and the help he affords is sometimes quick, and always seasonable; and sometimes by means, and sometimes without them; therefore my heart greatly rejoiceth; that is, in the Lord, the ground of which was the help he had from him; and this joy was very great, a joy unspeakable, and full of glory; it was not carnal, but spiritual, a heart joy, joy in the Holy Ghost; and with my song will I praise him; praise is due to God, what glorifies him, and is acceptable to him; it becomes the saints, is comely for them, and it is pleasant work to them, when grace is in exercise; see Psa 69:30 ; this may be understood of one of his songs, and one of the best of them, and of one better than this, as a Jewish writer (u) observes. (u) R. Moseh in Aben Ezra in loc.