I shall be next unto thee; which he gathered either from David's generosity, ingenuousness, and true friendship to him; or from some promise made to him by David concerning it. Or the meaning of the words, next unto thee, may be as much as to say, I shall be under thee, after thee, or inferior to thee, as the phrase tibi secundus oft signifies. So that the whole imports thus much: I do not look to be king myself, (as by my birth I might expect,) but that thou shalt be king, (God having so appointed,) and I but in a secondary place inferior to thee. That also Saul my father knoweth, by strong and well-grounded conjectures, as hath been noted.
Related Commentaries of 1 Samuel 23:17
1 Samuel 23:17
17 And he said unto him, Fear not: for the hand of Saul my father shall not find thee; and thou shalt be king over Israel, and I shall be next unto thee; and that also Saul my father knoweth.