Exodus 4:22-24

Holman Christian Standard Bible

²² Then you will say to Pharaoh: This is what Yahweh says: Israel is My firstborn son.^{(A) 23} I told you: Let My son go so that he may worship Me, but you refused to let him go. Now I will kill your firstborn son!”^(B)

²⁴ On the trip, at an overnight campsite, it happened that the Lord confronted him and sought to put him to death.