(16) Established.--Two different Hebrew words are so translated in this verse. The first is the same word as that used in 2Samuel 7:12-13, while the second is translated sure in 1Samuel 2:35; Isaiah 55:3, and would be better rendered here also made sure.

Before thee.--The LXX. has unnecessarily changed this to before me. The thought is, that David is now made the head of the line in which shall be fulfilled the primeval promise "The seed of the woman shall bruise the serpent's head." This was originally given simply to the human race (Genesis 3:15); then restricted to the nation descended from Abraham (Genesis 22:18, &c); then limited to the tribe of Judah (Genesis 49:10, comp. Ezekiel 21:27), and now its fulfilment is promised in the family of David.

7:4-17 Blessings are promised to the family and posterity of David. These promises relate to Solomon, David's immediate successor, and the royal line of Judah. But they also relate to Christ, who is often called David and the Son of David. To him God gave all power in heaven and earth, with authority to execute judgment. He was to build the gospel temple, a house for God's name; the spiritual temple of true believers, to be a habitation of God through the Spirit. The establishing of his house, his throne, and his kingdom for ever, can be applied to no other than to Christ and his kingdom: David's house and kingdom long since came to an end. The committing iniquity cannot be applied to the Messiah himself, but to his spiritual seed; true believers have infirmities, for which they must expect to be corrected, though they are not cast off.And thine house and thy kingdom shall be established for ever before thee,.... That is, both his family and his government should be perpetuated, or he should always have one of his family to sit upon his throne; the accomplishment of which, in the beginning of it, he saw with his eyes in his son Solomon, and with an eye of faith in his greater Son the Messiah, in whom only these words will have their complete fulfilment; and so Abarbinel says this vision or prophecy is explained by some of the days of the Messiah; and this house and kingdom, in 1 Chronicles 17:14; are called by the Lord "my" house, and "my" kingdom:

thy throne shall be established for ever; which is a repetition of the same in other words for the confirmation of it.