Genesis 22:7-8; Genesis 30:32
Isaac spoke to Abraham his father and said, "My father!" And he said, "Here I am, my son." And he said, "Behold, the fire and the wood, but where is the lamb for the burnt offering?"
Abraham said, "God will provide for Himself the lamb for the burnt offering, my son." So the two of them walked on together.
let me pass through your entire flock today, removing from there every speckled and spotted sheep and every black one among the lambs and the spotted and speckled among the goats; and such shall be my wages.