Psalm of David. The title of this psalm, in the Syriac version, is,"for Asaph, an exhortation of David, concerning those things which are required in the ministry of the house of the Lord; and a prophecy of the praise of the conqueror, and of the perfect man in God.'
'Theodoret thinks it was written by David concerning good Josiah, whom he foresaw, by a spirit of prophecy, would rise up a great reformer of the people, and whom he proposes as a pattern of perfection to others; but it was, no doubt, written by him of himself; very likely, after he was delivered out of his troubles by the death of Saul, and was come to the kingdom, since he resolves to "sing of mercy and judgment": though by the interrogation, "when wilt thou come unto me?"
it looks as if he had not arrived to the height of his honour: wherefore, perhaps, this psalm was penned between his being made king over Judah, and his being made king over all the tribes; but, be it as it may, the design of it is to show his resolutions, how he would behave as a king in his court, and as a master in his family; so that it is very instructive to kings and civil magistrates, and to parents and masters of families: and as David was a type of Christ, he seems, throughout the whole, to represent him; and, indeed, there are some things in it which agree with none so well as with him; such as behaving wisely, in a perfect way, and walking in his house with a perfect heart; not suffering any evil thing to cleave unto him, and knowing none, and the like.
Ver. 1. I will sing of mercy and judgment,....