'Lamb for a Burnt Offering' in the Bible

Isaac spoke to Abraham his father, and said, "My father?" He said, "Here I am, my son." He said, "Here is the fire and the wood, but where is the lamb for a burnt offering?"

Abraham said, "God will provide himself the lamb for a burnt offering, my son." So they both went together.

"'When the days of her purification are completed, for a son, or for a daughter, she shall bring to the priest at the door of the Tent of Meeting, a year old lamb for a burnt offering, and a young pigeon, or a turtledove, for a sin offering: