'Speak Boldly' in the Bible

And this man began to speak boldly in the synagogue, but when Aquila and Priscilla heard him, they took him aside, and expounded to him the way of God more accurately.

For the king knows about these things, before whom I also speak boldly. For I am convinced not any of these things, nothing, to be hidden from him. For this was not done in a corner.

for which I am an ambassador in bondage, so that in it I may speak boldly, as I ought to speak.