New Revised Standard Version
for you will be his witness to all the world of what you have seen and heard.

Contemporary English Version
You must tell everyone what you have seen and heard.

New American Bible
for you will be his witness before all to 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.

For thou shalt be his witness to all men of those things which thou hast seen and heard.

thou shalt.

Acts 1:8,22 But you shall receive the power of the Holy Ghost coming upon you, and you shall be witnesses unto me in Jerusalem, and in all Judea, and Samaria, and even to the uttermost part of the earth. . . .

Acts 10:39-41 And we are witnesses of all things that he did in the land of the Jews and in Jerusalem: whom they killed, hanging him upon a tree. . . .

Acts 23:11 And the night following, the Lord standing by him, said: Be constant: for as thou hast testified of me in Jerusalem, so must thou bear witness also at Rome.

Acts 26:16 But rise up and stand upon thy feet: for to this end have I appeared to thee, that I may make thee a minister and a witness of those things which thou hast seen and of those things wherein I will appear to thee,

*etc:

Acts 27:24 Saying: Fear not, Paul, thou must be brought before Caesar; and behold, God hath given thee all them that sail with thee.

Luke 24:47,48 And that penance and remission of sins should be preached in his name, unto all nations, beginning at Jerusalem. . . .

John 15:27 And you shall give testimony, because you are with me from the beginning.

of.

Acts 4:20 For we cannot but speak the things which we have seen and heard.

Acts 26:20 But to them first that are at Damascus and at Jerusalem, and unto all the country of Judea, and to the Gentiles did I preach, that they should do penance and turn to God, doing works worthy of penance.