'Witness' in the Bible

For it gave me great joy when some of the brothers came and gave witness that you had the true faith and were walking in the true way.

Who have given witness to the church of your love for them: and you will do well to send them on their way well cared for, as is right for servants of God:

Demetrius has the approval of all men and of what is true: and we give the same witness, and you are certain that our witness is true.