28:31

preaching: The Greek word basically means “to make proclamation as a public messenger.” It stresses the manner of the proclamation: usually an open, public declaration rather than a sermon to a group. The theme of this preaching was the Kingdom of God. In the book of Acts, the expression “the Kingdom of God” occurs six times. The first occurrence is at Ac 1:3, describing Jesus’ speaking about this Kingdom during the 40 days between his resurrection and his ascension. The Kingdom of God continued to be the theme that dominated the preaching of the apostles.​—Ac 8:12; 14:22; 19:8; 28:23.

with the greatest freeness of speech: Or “with all boldness (fearlessness).” The Greek word par·re·siʹa has also been rendered “outspokenness.” (Ac 4:13) This noun and the related verb par·re·si·aʹzo·mai, often rendered “speak boldly [with boldness],” occur several times in the book of Acts. Boldness was, from the beginning of Luke’s account to the end, an identifying mark of the preaching done by the early Christians.​—Ac 4:29, 31; 9:27, 28; 13:46; 14:3; 18:26; 19:8; 26:26.

without hindrance: Or “freely.” The book of Acts ends on this positive note. Although under house arrest, Paul continued to preach and teach openly. Nothing could stop the spread of the Kingdom message in Rome. This is an appropriate finish to the book of Acts. It describes how the holy spirit empowered first-century Christians to begin the greatest preaching campaign in history, spreading the good news of God’s Kingdom “to the most distant part of the earth.”​—Ac 1:8.