78 The expression is לֵךְ מֵעָלָי (lekh me’alay, “go from on me”) with the adversative use of the preposition, meaning from being a trouble or a burden to me (S. R. Driver, Exodus, ; R. J. Williams, Hebrew Syntax, 51, §288).
79 Heb “add to see my face.” The construction uses a verbal hendiadys: “do not add to see” (אַל־תֹּסֶף רְאוֹת, ’al-toseph ré’ot), meaning “do not see again.” The phrase “see my face” means “come before me” or “appear before me.”
80 The construction is בְּיוֹם רְאֹתְךָ (béyom ré’otékha), an adverbial clause of time made up of the prepositional phrase, the infinitive construct, and the suffixed subjective genitive. “In the day of your seeing” is “when you see.”

In other versions

Then Pharaoh said to him, “Get away from me; take care never to see my face again, for on the day you see my face you shall die.”

Pharaoh said to Moses, “Get out of my sight! Make sure you do not appear before me again! The day you see my face you will die.”

Pharaoh said to him, “Leave me! Make sure you never see my face again, for on the day you see my face, you will die.”

“Get out of here!” Pharaoh shouted at Moses. “I’m warning you. Never come back to see me again! The day you see my face, you will die!”

And Pharaoh said to him, “Go from me. Be careful not to see my face again, because on the day of your seeing my face you will die.”

And Pharaoh said unto him, Get thee from me, take heed to thyself, see my face no more; for in that day thou seest my face thou shalt die.

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