Those are some really good scriptures, and points you made.
Acts 1:8 especially, shows the role of the holy spirit, in preaching urgently, and speaking boldly.
I'm reminded of the situation described for us at Acts 5.
The disciples were on fire with zeal, and 'large numbers of men and women, were being added to
their number (Acts 5:14)'.
This annoyed some... chiefly, the religious leaders.
They grabbled the apostles and imprisoned them (Acts 5:17, 18).
God said, 'Really.' Sent an angel to release them, with these words...
“Go, stand and speak to the people in the temple
area the whole message of this Life.”
At this, the apostles entered into the temple
area about daybreak and
began to teach (Acts 5:19-21).
The religious leaders grabbled them against... this time, a little less forcefully, since they were afraid the people would stone them, and they had them stand before the Council. The high priest interrogated them, saying,
“We gave you strict orders not to continue teaching in this name, and yet, you have filled Jerusalem with your teaching and intend to bring this Man’s blood upon us.”
Peter and the apostles answered, “We must obey God rather than men. (Acts 5:27-29)
Had Gamaliel not intervened... no doubt, by God's spirit, the apostles would be dead men, right there and then (Acts 5:33, 34), because they gave a bold witness to people who were telling them to keep quiet about the things they were teaching.
The account ends with these words...
Acts 5:40-42
40 They followed his [Gamaliel] advice; and after calling the apostles in, they flogged them and ordered them not to speak in the name of Jesus, and
then released them.
41 So they went on their way from the presence of the Council, rejoicing that they had been considered worthy to suffer shame for
His name.
42 And every day, in the temple and from house to house, they did not stop teaching and preaching the good news of Jesus
as the Christ.
Not only did the holy spirit infuse in them courage and zeal, but it also protected them from death... which they were willing to face, like Hananiah, Mishael, and Azariah.
God's people need holy spirit to preach... among other things.