'Confirmed' in the Bible

But if he does not listen to you, take one or two more with you, so that by the mouth of two or three witnesses every fact may be confirmed.

And they went out and preached everywhere, while the Lord worked with them, and confirmed the word by the signs that followed.][And they promptly reported all these instructions to Peter and his companions. And after that, Jesus Himself sent out through them from east to west the sacred and imperishable proclamation of eternal salvation.]

even as the testimony concerning Christ was confirmed in you,

This is the third time I am coming to you. Every fact is to be confirmed by the testimony of two or three witnesses.

how will we escape if we neglect so great a salvation? After it was at the first spoken through the Lord, it was confirmed to us by those who heard,