Moses received from God himself the commission to say to Pharaoh: “Thus says YHWH, Israel is my firstborn son, and I say to you, ‘Let my son go that he may serve me’” (Ex 4:22f.). The nations are God’s great family, but Israel is the “firstborn son,” and as such, belongs to God in a special way, with all that firstborn status means in the ancient Middle East.
