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
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 ) .