Exodus 4:22-24

Amplified Bible, Classic Edition

²² And you shall say to Pharaoh, Thus says the Lord, Israel is My son, even My firstborn.

²³ And I say to you, Let My son go, that he may serve Me; and if you refuse to let him go, behold, I will slay your son, your firstborn.

²⁴ Along the way at a [resting-] place, the Lord met [Moses] and sought to kill him [made him acutely and almost fatally ill].