Abraham’s response [to Isaac’s question regarding where the sacrificial lamb was], sufficiently accurate and cautious moves me. I do not know what he saw in his spirit, for he does not speak about the present but about the future: “God himself will provide himself a sheep.” He responded to his son’s inquiry about present things with future things. For “the Lord himself will provide himself with a sheep” in Christ, because also “Wisdom herself has built herself a house,” and “He himself humbled himself unto death.”

—Origen, Homilies on Genesis 8.6