'Established' in the Bible

But if he does not listen, take one or two others with you, so that at the testimony of two or three witnesses every matter may be established.

This is the third time I am coming to visit you. By the testimony of two or three witnesses every matter will be established.

if indeed you remain in the faith, established and firm, without shifting from the hope of the gospel that you heard. This gospel has also been preached in all creation under heaven, and I, Paul, have become its servant.

Therefore, I intend to remind you constantly of these things even though you know them and are well established in the truth that you now have.