1 Kings 11:36

But Abishai the son of Zeruiah helped him, and struck the Philistine and put him to death. Then the men of David swore to him, saying, “You shall not go out again with us to battle, so that you do not extinguish the lamp of Israel.”

“For You are my lamp, O Yahweh; And Yahweh illumines my darkness.

“However, I will not tear away all the kingdom, but I will give one tribe to your son for the sake of My servant David and for the sake of Jerusalem which I have chosen.”

But as for the sons of Israel who lived in the cities of Judah, Rehoboam reigned over them.

Now it happened when all Israel heard that Jeroboam had returned, that they sent and called him to the congregation and made him king over all Israel. None but the tribe of Judah followed the house of David.

Now Rehoboam the son of Solomon became king in Judah. Rehoboam was forty-one years old when he became king, and he reigned seventeen years in Jerusalem, the city which Yahweh had chosen from all the tribes of Israel to put His name there. And his mother’s name was Naamah the Ammonitess.

But for David’s sake Yahweh his God gave him a lamp in Jerusalem, to raise up his son after him and to establish Jerusalem;

However, Yahweh was not willing to make Judah a ruin, for the sake of David His servant, since He had promised him to give a lamp to him through his sons always.

So Yahweh was very angry with Israel and caused them to depart from His presence; none was left except the tribe of Judah alone.

So the king did not listen to the people, for it was a turn of events from God, that Yahweh might establish His word, which He spoke through Ahijah the Shilonite to Jeroboam the son of Nebat.

However, Yahweh was not willing to make the house of David a ruin because of the covenant which He had cut with David, and since He had promised to give a lamp to him and his sons forever.

“There I will cause the horn of David to spring up; I have prepared a lamp for Mine anointed.