Genesis 15:16 But in the fourth generation they shall return here, for the iniquity of the Amorites is not yet complete."
Joshua 10:10-14 So the LORD routed them before Israel, killed them with a great slaughter at Gibeon, chased them along the road that goes to Beth Horon, and struck them down as far as Azekah and Makkedah. And it happened, as they fled before Israel and were on the descent of Beth Horon, that the LORD cast down large hailstones from heaven on them as far as Azekah, and they died. There were more who died from the hailstones than the children of Israel killed with the sword. Then Joshua spoke to the LORD in the day when the LORD delivered up the Amorites before the children of Israel, and he said in the sight of Israel: “Sun, stand still over Gibeon; And Moon, in the Valley of Aijalon.” So the sun stood still, And the moon stopped, Till the people had revenge Upon their enemies. Is this not written in the Book of Jasher? So the sun stood still in the midst of heaven, and did not hasten to go down for about a whole day. And there has been no day like that, before it or after it, that the LORD heeded the voice of a man; for the LORD fought for Israel.
Deuteronomy 7:1-2 'When the LORD your God brings you into the land which you go to possess, and has cast out many nations before you, the Hittites and the Girgashites and the Amorites and the Canaanites and the Perizzites and the Hivites and the Jebusites, seven nations greater and mightier than you, and when the LORD your God delivers them over to you, you shall conquer them and utterly destroy them. You shall make no covenant with them nor show mercy to them.
Joshua 10:5-6 Therefore the five kings of the Amorites, the king of Jerusalem, the king of Hebron, the king of Jarmuth, the king of Lachish, and the king of Eglon, gathered together and went up, they and all their armies, and camped before Gibeon and made war against it. And the men of Gibeon sent to Joshua at the camp at Gilgal, saying, “Do not forsake your servants; come up to us quickly, save us and help us, for all the kings of the Amorites who dwell in the mountains have gathered together against us.”