‘And he entered into the synagogue, and spoke boldly for the space of three months, reasoning and persuading as to the things concerning the Kingly Rule of God.'
Encouraged by this experience Paul entered the synagogue and for three months boldly ‘reasoned and persuaded' about the ‘things concerning the Kingly Rule of God'. For ‘reasoned' compare Acts 17:2; Acts 17:17; Acts 18:4; Acts 18:19 where it is always in the synagogue or with the Jews. However in Acts 19:9 he also ‘reasons' daily in the school of Tyrannus in the new group that he has formed, which marks a new beginning. For ‘persuaded' as used of seeking to win men for Christ see Acts 13:43; Acts 17:4; Acts 18:4; Acts 28:23-24.
‘Concerning the Kingly Rule of God.' Acts commences with (Acts 1:3) and ends with (Acts 28:31) the proclaiming of the Kingly Rule of God. See also Acts 8:12; Acts 14:22; Acts 20:25; Acts 28:23. It is the equivalent of proclaiming ‘the Gospel'. The call is for men to come under the Kingly Rule of God in order that in the end they may enjoy the everlasting Kingdom.
In this he parallels Jesus who also went out to the Jews proclaiming the Kingly Rule of God. He too found that ‘the Jews' (the unresponsive ones) hardened their hearts against His Message.
‘‘And he entered into the synagogue.' The singular probably signifies ‘the sphere of the synagogue'. There would be a number of synagogues in Ephesus and he probably visited a number of them.