'Witness' in the Bible

beginning with the baptism of John until the day that He was taken up from us—one of these must become a witness with us of His resurrection.”

And with great power the apostles were giving testimony to the resurrection of the Lord Jesus, and abundant grace was upon them all.

Of Him all the prophets bear witness that through His name everyone who believes in Him receives forgiveness of sins.”

Therefore they spent a long time there speaking boldly with reliance upon the Lord, who was testifying to the word of His grace, granting that signs and wonders be done by their hands.

and yet He did not leave Himself without witness, in that He did good and gave you rains from heaven and fruitful seasons, satisfying your hearts with food and gladness.”

And God, who knows the heart, testified to them giving them the Holy Spirit, just as He also did to us;

For you will be a witness for Him to all men of what you have seen and heard.

And when the blood of Your witness Stephen was being shed, I also was standing by approving, and watching out for the coats of those who were slaying him.’

But on the night immediately following, the Lord stood at his side and said, “Take courage; for as you have solemnly witnessed to My cause at Jerusalem, so you must witness at Rome also.”

But get up and stand on your feet; for this purpose I have appeared to you, to appoint you a minister and a witness not only to the things which you have seen, but also to the things in which I will appear to you;