1 Samuel 30:11

For I was hungry, and ye gave me food; I was thirsty, and ye gave me drink; I was a stranger, and ye took me in;

Which of these three, dost thou think, was neighbor to him that fell among the robbers?

Therefore, "if thy enemy hunger, feed him; if he thirst, give him drink. For in so doing thou wilt heap coals of fire on his head."

Treasury of Scripture Knowledge

And they found an Egyptian in the field, and brought him to David, and gave him bread, and he did eat; and they made him drink water;

For I was hungry, and ye gave me food; I was thirsty, and ye gave me drink; I was a stranger, and ye took me in;

Which of these three, dost thou think, was neighbor to him that fell among the robbers?

Therefore, "if thy enemy hunger, feed him; if he thirst, give him drink. For in so doing thou wilt heap coals of fire on his head."

And if I send them away fasting to their houses, they will faint on the road; and some of them have come from altar.