'Fearlessly' in the Bible

As they looked on Peter and John so fearlessly outspoken--and also discovered that they were illiterate persons, untrained in the schools--they were surprised; and now they recognized them as having been with Jesus.

Barnabas, however, came to his assistance. He brought Saul to the Apostles, and related to them how, on his journey, he had seen the Lord, and that the Lord had spoken to him, and how in Damascus he had fearlessly taught in the name of Jesus.

and speaking fearlessly in the name of the Lord. And he often talked with the Hellenists and had discussions with them.

Afterwards he went into the synagogue. There for three months he continued to preach fearlessly, explaining in words which carried conviction the truths which concern the Kingdom of God.