New Living Translation
For you are to be his witness, telling everyone what you have seen and heard.

American Standard Version
For thou shalt be a witness for him unto all men of what thou hast seen and heard.

Berean Study Bible
You will be His witness to everyone of what you have seen and heard.

Douay-Rheims Bible
For thou shalt be his witness to all men, of those things which thou hast seen and heard.

English Revised Version
For thou shalt be a witness for him unto all men of what thou hast seen and heard.

King James Bible
For thou shalt be his witness unto all men of what thou hast seen and heard.

World English Bible
For you will be a witness for him to all men of what you have seen and heard.

Young's Literal Translation
because thou shalt be his witness unto all men of what thou hast seen and heard;

Acts 22:15 Additional Translations ...