Acts 4:13

4:13 Now when they saw the boldness of Peter and John, and perceived that they were unlearned and ignorant men, they marvelled; and they took knowledge of them, that they had been with Jesus.

Acts 4:20

4:20 For we cannot but speak the things which we have seen and heard.

Acts 4:31

4:31 And when they had prayed, the place was shaken where they were assembled together; and they were all filled with the Holy Ghost, and they spake the word of God with boldness.