Hold him not guiltless - Do not consider him as an innocent man, though I have sworn to him that I would not put him to death by the sword; yet as thou art a wise man, and knowest how to treat such persons, treat him as he deserves; only as I have sworn to him, and he is an aged man, let him not die a violent death; bring not down his hoary head to the grave with blood. So Solomon understood David, and so I think David should be understood; for the negative particle לא lo, in the former clause, hold him Not guiltless, should be repeated in this latter clause, though not expressed, his hoary head bring thou Not down; instances of which frequently occur in the Hebrew Bible. See Dr. Kennicott's note at the end of this chapter, Kg1 2:46 (note).

Now therefore hold him not guiltless,.... Do not look upon him as an innocent person; and if he commits an offence against thee, as he has against me, do not acquit him as I have done:

for thou art a wise man; so it seems he was before the appearance of the Lord to him at Gibeon, even before his father's death he had given some proofs of it to David himself:

and knowest what thou oughtest to do unto him; to watch and observe him, and, if found offending, to punish him according to the rules of justice, and the laws of the land:

but his hoary head bring thou down to the grave with blood; spare him not on account of his age, but put him to death whensoever he shall be found guilty, let him not die a natural death.

for thou art a wise man--Solomon had given early indications of wisdom before his miraculous endowment with the heavenly gift (see Kg1 3:11), and his own sagacity would dictate the course that should be followed in any new offense that Shimei might commit.