Exodus 4:22-23

Moses Returns to Egypt

²² Then you shall say to Pharaoh, 'Thus says the Lord, _c Israel is my _d firstborn son, ²³ and I say to you, "Let my son go that he may serve me." If you refuse to let him go, behold, I _e will kill your firstborn son.'"

1. Cross References
   Hosea 11:1
   When Israel was a child, I loved him, and out of Egypt I called my son.
   
2. Cross References
   Jeremiah 31:9
   With weeping they shall come, and with pleas for mercy I will lead them back, I will make them walk by brooks of water, in a straight path in which they shall not stumble, for I am a father to Israel, and Ephraim is my firstborn.
   
3. Cross References
   Exodus 11:5
   And every firstborn in the land of Egypt shall die, from the firstborn of Pharaoh who sits on his throne, even to the firstborn of the slave girl who is behind the handmill, and all the firstborn of the cattle.
   Exodus 12:29
   At midnight the Lord struck down all the firstborn in the land of Egypt, from the firstborn of Pharaoh who sat on his throne to the firstborn of the captive who was in the dungeon, and all the firstborn of the livestock.