2 'I am going in the way of all the earth, and thou hast been strong, and become a man, 3 and kept the charge of Jehovah thy God, to walk in His ways, to keep His statutes, His commands, and His judgments, and His testimonies, as it is written in the law of Moses, so that thou dost wisely all that thou dost, and whithersoever thou turnest, 4 so that Jehovah doth establish His word which He spake unto me, saying, If thy sons observe their way to walk before Me in truth, with all their heart, and with all their soul; saying, There is not cut off a man of thine from the throne of Israel.
Matthew Henry's Commentary on 1 Kings 2:2-4
Commentary on 1 Kings 2:1-4
(Read 1 Kings 2:1-4)
David's charge to Solomon is, to keep the charge of the Lord. The authority of a dying father is much, but nothing to that of a living God. God promised David that the Messiah should come from his descendants, and that promise was absolute; but the promise, that there should not fail of them a man on the throne of Israel, was conditional; if he walks before God in sincerity, with zeal and resolution: in order hereunto, he must take heed to his way.