The God of Israel said, the Rock of Israel spake to me, He that ruleth over men must be just, ruling in the fear of God.

Wesley's Notes

23:3 Rock - He who is the strength, and defence, and protector of his people; which he manifests by directing kings and rulers so to manage their power as may most conduce to their comfort and benefit. Ruleth - Here are the two principal parts of a king's duty, answerable to the two tables of God's law, justice towards men, and piety towards God, both which he is to maintain and promote among his people.

King James Translators' Notes

He...: or, Be thou ruler, etc

Scofield Reference Notes

Margin fear

See Scofield Note: "Ps 19:9".

Jamieson-Fausset-Brown Bible Commentary

3. the Rock of Israel-This metaphor, which is commonly applied by the sacred writers to the Almighty, was very expressive to the minds of the Hebrew people. Their national fortresses, in which they sought security in war, were built on high and inaccessible rocks.

spake to me-either preceptively, giving the following counsels respecting the character of an upright ruler in Israel, or prophetically, concerning David and his royal dynasty, and the great Messiah, of whom many think this is a prophecy, rendering the words, "he that ruleth"-"there shall be a ruler over men."

Matthew Henry's Concise Commentary

23:1-7 These words of David are very worthy of regard. Let those who have had long experience of God's goodness, and the pleasantness of heavenly wisdom, when they come to finish their course, bear their testimony to the truth of the promise. David avows his Divine inspiration, that the Spirit of God spake by him. He, and other holy men, spake and wrote as they were moved by the Holy Ghost. In many things he had his own neglect and wrong conduct to blame. But David comforted himself that the Lord had made with him an everlasting covenant. By this he principally intended the covenant of mercy and peace, which the Lord made with him as a sinner, who believed in the promised Saviour, who embraced the promised blessing, who yielded up himself to the Lord, to be his redeemed servant. Believers shall for ever enjoy covenant blessings; and God the Father, Son, and Holy Ghost, shall be for ever glorified in their salvation. Thus pardon, righteousness, grace, and eternal life, are secured as the gift of God through Jesus Christ. There is an infinite fulness of grace and all blessings treasured up in Christ, for those who seek his salvation. This covenant was all David's salvation, he so well knew the holy law of God and the extent of his own sinfulness, that he perceived what was needful for his own case in this salvation. It was therefore all his desire. In comparison, all earthly objects lost their attractions; he was willing to give them up, or to die and leave them, that he might enjoy full happiness, Ps 73:24-28. Still the power of evil, and the weakness of his faith, hope, and love, were his grief and burden. Doubtless he would have allowed that his own slackness and want of care were the cause; but the hope that he should soon be made perfect in glory, encouraged him in his dying moments.