'Proved' in the Bible

For, behold, this same thing, your being grieved according to God, how much diligence it wrought in you, but what excusing of yourselves, but what indignation, but what fear, but what ardent desire, but what zeal, but what vengeance: in every way ye have proved yourselves to be pure in the matter.

For if I have been doing some boasting about you to him, I have never been ashamed of it. Moreover, since everything we told you was true, our boasting to Titus has also proved to be true.

And we have sent with them our brother, whom we have oftentimes proved diligent in many things, but now much more diligent, upon the great confidence which I have in you.

Now I have become foolish; you have forced me [by questioning my apostleship]. Actually I should have been commended by you [instead of being treated disdainfully], for I was not inferior to those super-apostles, even if I am nobody.