1 Samuel 15

2 comments from the early church. Read 1 Samuel 15

Verse 27–28

Again Saul sinned by disobedience, and again Samuel addressed to him the Lord's word: "Inasmuch, therefore, as you have rejected the word of the Lord, the Lord has also rejected you as king." And again, because of the same sin, when Saul admitted it and sought pardon, beseeching Samuel to go back with him and appease God, the prophet said, "I will not return with you, because you have rejected the word of the Lord, and the Lord has rejected you as king over Israel." And Samuel turned about to go away; but he grabbed hold of the skirt of his mantle, and it tore. And Samuel said to him, "The Lord has torn the kingdom from Israel from your hand this day and has given it to your neighbor who is better than you, and Israel shall be divided in two. But the triumpher in Israel will not spare and will not be moved to repentance; for he is not a man that he should repent. He threatens and does not persist."Actually, the man to whom these words were spoken, "The Lord shall reject you as king over Israel," and, "The Lord has torn the kingdom of Israel from you this day," ruled over Israel for forty years—for the same duration as David did—and he heard this pronouncement in the early part of his reign. Accordingly, we are to understand it to mean that no one of Saul's posterity was to rule after him—an admonition to look to David's stock whence was to stem, according to the flesh, Jesus Christ, the Mediator between God and humanity.
Augustine of Hippo · d. 430City of God
In many Latin versions we find one of the above verses in the following form: "The Lord has torn the kingdom of Israel from your hand." But I have quoted from the Greek text: "The Lord has torn the kingdom from Israel from your hand"—the expression "from Israel" being equivalent to "from your hand." In this way, Samuel stood figuratively for the people of Israel which was to lose the kingdom when our Lord Jesus Christ would come to reign—spiritually, not carnally—in the New Testament. The reference to him in the words "and he has given it to your neighbor" is an allusion to the racial relationship, for Christ in the flesh derived from Israel just as did Saul.
Augustine of Hippo · d. 430City of God