My hand will sustain him; surely My arm will strengthen him.
PSALM 89 The prophet who wrote this psalm, whoever he was, in approaching the throne of grace to make supplication to God in behalf of the afflicted Church, lays down, as an encouragement both to himself and the rest of the faithful to cherish good hope, the covenant which God had made with David.
Commenting on Psalm 89:1-52
With whom my hand shall be established, or, "with whom my hand shall ever be present." The almightiness of God abides permanently with Jesus in his work as Redeemer and Ruler of his people. Mine arm also shall strengthen him. The fulness of divine power shall attend him.
The covenant God made with David and his seed was mentioned before (Psa 89:3, Psa 89:4); but in these verses it is enlarged upon, and pleaded with God, for favour to the royal family, now almost sunk and ruined; yet certainly it looks at Christ, and has its accomplishment in him much more than in David; nay, some passages here are scarcely applicable at all...
Commenting on Psalm 89:19-37