Exodus 4:22-24

New Revised Standard Version, Anglicised Catholic Edition

²² Then you shall say to Pharaoh, “Thus says the Lord: Israel is my firstborn son. ²³ I said to you, ‘Let my son go that he may worship me.’ But you refused to let him go; now I will kill your firstborn son.”’

²⁴ On the way, at a place where they spent the night, the Lord met him and tried to kill him.