Verse 21. - With whom my hand shall be established; i.e. "to whom I will give continual support" (see 1 Samuel 18:12, 14; 2 Samuel 5.]0; 7:9). Mine arm also shall strengthen him (comp. ver. 13).

89:19-37 The Lord anointed David with the holy oil, not only as an emblem of the graces and gifts he received, but as a type of Christ, the King Priest, and Prophet, anointed with the Holy Ghost without measure. David after his anointing, was persecuted, but none could gain advantage against him. Yet all this was a faint shadow of the Redeemer's sufferings, deliverance, glory, and authority, in whom alone these predictions and promises are fully brought to pass. He is the mighty God. This is the Redeemer appointed for us, who alone is able to complete the work of our salvation. Let us seek an interest in these blessings, by the witness of the Holy Spirit in our hearts. As the Lord corrected the posterity of David for their transgressions, so his people shall be corrected for their sins. Yet it is but a rod, not a sword; it is to correct, not to destroy. It is a rod in the hand of God, who is wise, and knows what he does; gracious, and will do what is best. It is a rod which they shall never feel, but when there is need. As the sun and moon remain in heaven, whatever changes there seem to be in them, and again appear in due season; so the covenant of grace made in Christ, whatever alteration seems to come to it, should not be questioned.With whom my hand shall be established,.... A promise of God's gracious presence with Christ, as man and Mediator, which is his work; of a communication of grace and strength from him, to carry him through it; and of his supporting and upholding him under it; which hand of his power and grace would be always prepared and ready for him, as the word (a) signifies, and stable and firm with him, so that he should have success in it; the pleasure of the Lord should prosper in his hand; so the Targum,

"for my hands are prepared for his help;''

the Septuagint, Vulgate Latin, and all the eastern versions, "mine hand shall help him"; and which is confirmed in the next words: mine arm also shall strengthen him; in the human nature, subject to and encompassed with infirmities: this shows the greatness of the work of man's redemption, which no creature could effect; it required the arm and power of the Lord to be exerted, and by which Christ was made strong by the Lord, both for himself, and for the working out of salvation for us; which he did when he travelled in the greatness of his strength, standing up under the mighty weight of our sins, and the wrath of God; and yet failed not, nor was he discouraged, till his own arm brought salvation to him; see Psalm 80:17.

(a) "parate erit", Musculus, Muis; so the Targum.