But now your kingdom will not endure; the LORD has sought a man after His own heart and appointed him ruler over His people, because you have not kept the command of the LORD.”
Here is, I. Saul's offence in offering sacrifice before Samuel came. Samuel, when he anointed him, had ordered him to tarry for him seven days in Gilgal, promising that, at the end of those days, he would be sure to come to him, and both offer sacrifices for him and direct him what he should do. This we had Sa1 10:8.
Commenting on 1 Samuel 13:8-14
But now thy kingdom shall not continue,.... That is, in his family, nor in his tribe, but be removed to another: the Lord hath sought him a man after his own heart: who was David; though as yet Samuel knew him not, he knew by divine revelation that there was another one chosen, to whom the kingdom would be given; a man every way agreeable...
But now thy kingdom shall not continue: the LORD hath sought him a man after his own heart, and the LORD hath commanded him [to be] captain over his people, because thou hast not kept [that] which the LORD commanded thee. (k) That is, David.