17 Then after his return from the defeat of Chedorlaomer and the kings who were with him, the king of Sodom went out to meet him at the valley of Shaveh (that is, the King’s Valley). 18 And Melchizedek king of Salem brought out bread and wine; now he was a priest of God Most High. 19 He blessed him and said,
“Blessed be Abram of God Most High,
Possessor of heaven and earth;
20 And blessed be God Most High,
Who has delivered your enemies into your hand.”
He gave him a tenth of all.
21 The king of Sodom said to Abram, “Give the people to me and take the goods for yourself.” 22 Abram said to the king of Sodom, “I have sworn to the LORD God Most High, possessor of heaven and earth, 23 that I will not take a thread or a sandal thong or anything that is yours, for fear you would say, `I have made Abram rich.’ 24 “I will take nothing except what the young men have eaten, and the share of the men who went with me, Aner, Eshcol, and Mamre; let them take their share.”
It’s pretty amazing that Abram was willing to part with his just rewards, even when they were freely offered by those whom he had helped. He knew the promise of God was worth so much more, that he didn’t need anything more than what God would give him.