For thou shalt be a witness for him unto all men of what thou hast seen and heard.
For thou shalt be his witness unto all men of what thou hast seen and heard.
For you will be His witness unto all men of everything that you have seen and heard.
You will be his witness to everyone concerning what you have seen and heard.
For you shall be his witness to all men about those things which you have seen and heard.
For thou shalt be his witness to all men, of those things which thou hast seen and heard.