'Well known' in the Bible

you are well known to be a letter of Christ, written by us as his ministers, not with ink, but with the Spirit of the living God, not in tables of stone, but in fleshy tables of the heart.

Therefore, because we know the fear of the Lord, we try to persuade people, but we are well known to God, and I hope we are well known to your consciences too.

Through honour and dishonour, through evil report and good report; as deceivers, yet true, As unknown, yet well-known;

as unknown and yet well-known, as dying and yet as you see very much alive, as punished and yet not killed,

I am sending with him the well-known brother whose praise for spreading the good news is ringing through all the churches.

I actually begged Titus to go, and sent the well-known brother with him. Titus did not make any money out of you, did he? Did not he and I act in the same spirit, and take the very same steps?