'So called' in the Bible

so Jesus called them and said, "You know the so-called rulers of the Gentiles lord it over them, and their great men overbear them:

And there was the so-called Barabbas, with the rebels, bound, even with them who, in the rebellion, had committed, murder.

Pilate asked them again, "And what am I to do with your so-called king of the Jews?"