Verses 25, 26. - And now, O Lord God; Hebrew, Jehovah God. Similarly, in ver. 26 the Hebrew is "Let thy Name be magnified forever, saying, Jehovah Sabaoth is God over Israel." The special relation of Jehovah to Israel is throughout kept constantly in view; for Jehovah is the Name of Deity in covenant with his people, and it is in the confirmation and permanence of the covenant that David sees the true value of the lasting continuance of his own house.

7:18-29 David's prayer is full of the breathings of devout affection toward God. He had low thoughts of his own merits. All we have, must be looked upon as Divine gifts. He speaks very highly and honourably of the Lord's favours to him. Considering what the character and condition of man is, we may be amazed that God should deal with him as he does. The promise of Christ includes all; if the Lord God be ours, what more can we ask, or think of? Eph 3:20. He knows us better than we know ourselves; therefore let us be satisfied with what he has done for us. What can we say more for ourselves in our prayers, than God has said for us in his promises? David ascribes all to the free grace of God. Both the great things He had done for him, and the great things He had made known to him. All was for his word's sake, that is, for the sake of Christ the eternal Word. Many, when they go to pray, have their hearts to seek, but David's heart was found, that is, it was fixed; gathered in from its wanderings, entirely engaged to the duty, and employed in it. That prayer which is from the tongue only, will not please God; it must be found in the heart; that must be lifted up and poured out before God. He builds his faith, and hopes to speed, upon the sureness of God's promise. David prays for the performance of the promise. With God, saying and doing are not two things, as they often are with men; God will do as he hath said. The promises of God are not made to us by name, as to David, but they belong to all who believe in Jesus Christ, and plead them in his name.And now, O Lord God,.... From confessions of unworthiness, and of the goodness of God, and a recital of favours conferred on him and the people of Israel, David proceeds to petitions:

the word that thou hast spoken concerning thy servant, and concerning his house, establish it for ever: he prays for the sure performance of the promise of God respecting himself and his family, and the stability and perpetual continuance of the kingdom in it, and has, no doubt, a special regard to the Messiah, the promised seed that should spring from him:

and do as thou hast said: for though God had purposed and promised to do those several things, and would do them, yet it was expected by him, and it was right in David to pray for the performance of them; see Ezekiel 36:37.