1 Thessalonians 1:5

1:5 in that our gospel did not come to you merely in words, but in power and in the Holy Spirit and with deep conviction (surely you recall the character we displayed when we came among you to help you).

Acts 4:13

4:13 When they saw the boldness of Peter and John, and discovered that they were uneducated and ordinary men, they were amazed and recognized these men had been with Jesus.

Acts 4:20

4:20 for it is impossible for us not to speak about what we have seen and heard.”

Acts 4:31

4:31 When they had prayed, the place where they were assembled together was shaken, and they were all filled with the Holy Spirit and began to speak the word of God courageously.

Acts 14:3

14:3 So they stayed there for a considerable time, speaking out courageously for the Lord, who testified to the message of his grace, granting miraculous signs and wonders to be performed through their hands.

Acts 17:2-3

17:2 Paul went to the Jews in the synagogue, as he customarily did, and on three Sabbath days he addressed them from the scriptures, 17:3 explaining and demonstrating that the Christ had to suffer and to rise from the dead, saying, “This Jesus I am proclaiming to you is the Christ.”

Ephesians 6:19-20

6:19 Pray for me also, that I may be given the message when I begin to speak – that I may confidently make known the mystery of the gospel, 6:20 for which I am an ambassador in chains. Pray that I may be able to speak boldly as I ought to speak.