'Silent' in the Bible

Now the Scripture passage he was reading was this:He was led like a sheep to the slaughter,and as a lamb is silent before its shearer,so He does not open His mouth.

When they heard this they became silent. Then they glorified God, saying, “So God has granted repentance resulting in life even to the Gentiles!”

Motioning to them with his hand to be silent, he explained to them how the Lord had brought him out of the prison. “Report these things to James and the brothers,” he said. Then he departed and went to a different place.

Then the whole assembly fell silent and listened to Barnabas and Paul describing all the signs and wonders God had done through them among the Gentiles.

Then the Lord said to Paul in a night vision, “Don’t be afraid, but keep on speaking and don’t be silent.