Commentaire sur Rois 1 1:21

Sinners. [They will be] lacking²³Literally, חטאים means “offenders.” and restrained from any greatness,²⁴Alternatively, חטאים means “banished.”—Targum, or will be treated as sinners. as in, “[Sling a stone] at a hair, and not miss [יחטיא].”²⁵Shoftim 20:16.

I and my son Solomon shall be counted offenders: This means punished, because since Adonijah will know that the kingship is supposed to be with Solomon he will strive to kill him, just as Saul sought to kill David for the same reason. There will also reason to mention the sin with Bath-sheba after David's death and bring this slander also upon Solomon. But perhaps if Solomon comes to rule, it will be clear to everyone that Bath-sheba was divinely ordained for David and was not forbidden after the death of Uriah. Because of reverence for the king they will be afraid to say anything against him or have this intention. "'I and my son Solomon shall be counted offenders' if you do not disclose this (that you intend for him to be king) while you're alive, because the good gift that you gave us is being exploited from us, and it should not be an incriminating thing for us for the matter to be revealed that your intention is to coronate us as you spoke and swore to your maidservant."