'Speaking Boldly' in the Bible

and speaking boldly in the name of the Lord; and he spoke and disputed with the Hellenists; and they undertook to kill him;

And both Paul and Barnabas speaking boldly said, It was necessary that the word of God should first be spoken to you; but since you cast it away, and judge yourselves unworthy of eternal life, behold, we turn to the gentiles.

Then they spent a long time in speaking boldly for the Lord, who testified to the word of his grace by granting miracles and prodigies to be performed by their hands.