But if I say to your children that the God of their fathers has sent me, they will ask, What is his name? And how shall I answer them?

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

You can hear this line at 02:12:43.024 in the Blu-ray version of the movie.

Quote context

[...]

- What words can I speak that they will heed?

- I will teach thee what thou wilt say.

- When thou hast brought forth the people, they shall serve me upon this mountain.

- I will put my laws into their hearts. And in their minds will I write them.

- Now, therefore, go. And I will be with thee.

- But if I say to your children that the God of their fathers has sent me, they will ask, What is his name? And how shall I answer them?

- I am that I am. Thou shalt say, I am hath sent me unto you.

- Is the holy mountain forbidden to men?

- Yes. And I am afraid for him.

- Then he is more than man, for look...

- Look at his face.

- He has seen God.

- Moses... your hair... your sandals.

[...]