Genesis 14:7
And they returned, and came to En-mishpat, which is Kadesh, and smote all the country of the Amalekites, and also the Amorites, that dwelt in Hazezon-tamar. And they returned, and came to En-mishpat, which is Kadesh, and smote all the country of the Amalekites, and also the Amorites, that dwelt in Hazezon-tamar.
The verse marks one stage in the march of Chedorlaomer king of Elam with four allied kings into Canaan to force revolted tributary princes back into submission after fourteen years of tribute. Five Canaanite kings joined forces to meet the invaders in the vale of Siddim, but they were completely overthrown, with a large part of the army cut to pieces and those who escaped fleeing to the mountains. The victors then plundered the cities of the plain and departed with rich spoil and many captives, among whom were Lot and his family. That calamity reached Abraham dwelling in peace at Mamre, who sought divine counsel and pursued the invaders with his 318 trained servants together with his confederates Mamre, Eshcol and Aner to rescue the captives.
As part of the account of Abraham's victory over the Elamites and rescue of the captives, the verse contributes to a witness to the true faith. People recognized divine power in Abraham's success and saw his unselfish conduct as evidence of the superiority of the religion he honored.