About midnight, the destroyer will come into the midst of Egypt, and all the first-born shall die, from the first-born of Pharaoh to the first-born of his servants.

13 seconds sound clip from the The Ten Commandments (1956) movie soundboard.

You can hear this line at 02:43:28.676 in the Blu-ray version of the movie.

Quote context

[...]

- In the hardness of his heart, Pharaoh has mocked God, and brings death to his own son!

- But he's my son, Moses. You would not harm my son?

- By myself, I am nothing. It is the power of God which uses me to work his will.

- You would not let him do this to me. I saved your son.

- I cannot save yours.

- Your god listens to you, Moses.

- About midnight, the destroyer will come into the midst of Egypt, and all the first-born shall die, from the first-born of Pharaoh to the first-born of his servants.

- When you were Prince of Egypt, you held me in your arms.

- When you were a condemned slave, I threw myself at your feet before the court of Pharaoh. Because I loved you, Moses.

- It is the Lord who executes judgment, Nefretiri.

- Go back to your son.

[...]