American Standard Version
And he said, Certainly I will be with thee; and this shall be the token unto thee, that I have sent thee: when thou hast brought forth the people out of Egypt, ye shall serve God upon this mountain.

Berean Study Bible
“I will surely be with you,” God said, “and this will be the sign to you that I have sent you: When you have brought the people out of Egypt, all of you will worship God on this mountain.”

Douay-Rheims Bible
And he said to him: I will be with thee: and this thou shalt have for a sign, that I have sent thee: When thou shalt have brought my people out of Egypt, thou shalt offer sacrifice to God upon this mountain.

English Revised Version
And he said, Certainly I will be with thee; and this shall be the token unto thee, that I have sent thee: when thou hast brought forth the people out of Egypt, ye shall serve God upon this mountain.

King James Bible
And he said, Certainly I will be with thee; and this shall be a token unto thee, that I have sent thee: When thou hast brought forth the people out of Egypt, ye shall serve God upon this mountain.

World English Bible
He said, "Certainly I will be with you. This will be the token to you, that I have sent you: when you have brought forth the people out of Egypt, you shall serve God on this mountain."

Young's Literal Translation
and He saith, 'Because I am with thee, and this is to thee the sign that I have sent thee: in thy bringing out the people from Egypt -- ye do serve God on this mount.'

Exodus 3:12 Additional Translations ...