Luke
Acts 28:31ESV·traditional attribution

proclaiming the kingdom of God and teaching about the Lord Jesus Christ with all boldness and without hindrance.

Matthew Henry Presbyterian @wholebiblehenry

We are here taking our leave of the history of blessed Paul; and therefore, since God saw it not fit that we should know any more of him, we should carefully take notice of every particular of the circumstances in which we must here leave him. I.

Commenting on Acts 28:30-31

John Gill Reformed Baptist @doctorgill

Preaching the kingdom of God,.... That is, the Gospel, as in Luk 4:43; he preached up Jesus as the King Messiah, and declared that his kingdom was come, and opened the nature of it; that it consisted not in meats and drinks, but in righteousness and peace, and joy in the Holy Ghost; which is the kingdom of grace here, and is within a man...

Albert Barnes Presbyterian @notesbybarnes

Verse 31. Preaching the kingdom of God. . With all confidence. Openly and boldly, without any one to hinder him. It is known, also, that Paul was not unsuccessful even when a prisoner at Rome. Several persons were converted by his preaching even in the court of the emperor.