GOD'S WORD® Translation
I told you to let my son go so that he may worship me. But you refused to let him go. So now I'm going to kill your firstborn son.'"

American Standard Version
and I have said unto thee, Let my son go, that he may serve me; and thou hast refused to let him go: behold, I will slay thy son, thy first-born.

Berean Study Bible
and I told you to let My son go so that he may worship Me. But since you have refused to let him go, behold, I will kill your firstborn son!’ ”

Douay-Rheims Bible
I have said to thee: Let my son go, that he may serve me, and thou wouldst not let him go: behold I will kill thy son, thy firstborn.

English Revised Version
and I have said unto thee, Let my son go, that he may serve me; and thou hast refused to let him go: behold, I will slay thy son, thy firstborn.

King James Bible
And I say unto thee, Let my son go, that he may serve me: and if thou refuse to let him go, behold, I will slay thy son, even thy firstborn.

World English Bible
and I have said to you, "Let my son go, that he may serve me;" and you have refused to let him go. Behold, I will kill your son, your firstborn.'"

Young's Literal Translation
and I say unto thee, Send away My son, and he doth serve Me; and -- thou dost refuse to send him away -- lo, I am slaying thy son, thy first-born.'

Exodus 4:23 Additional Translations ...