Acts 18:28

28 for powerfully the Jews he was refuting publicly, shewing through the Writings Jesus to be the Christ.

Acts 18:28 Meaning and Commentary

Acts 18:28

For he mightily convinced the Jews
His reasoning was so strong and nervous, his arguments so weighty and powerful, and the passages he produced out of the Old Testament so full and pertinent, that the Jews were not able to stand against him; they could not object to the texts of Scripture he urged, nor to the sense he gave of them, nor answer the arguments founded upon them; he was an overmatch for them; they were refuted by him over and over, and were confounded to the last degree:

and that publicly,
in their synagogue, before all the people; which increased their shame and confusion; and was the means of spreading the Gospel, of bringing others to the faith of it, and of establishing them in it, who had already received it: showing by the Scriptures; of the Old Testament, which the Jews received and acknowledged as the word of God:

that Jesus was Christ;
or that Christ, that Messiah, which these Scriptures spoke of, whom God had promised, and the church of God expected; and which was the main thing in controversy between the Jews and the Christians, as it still is.

Acts 18:28 In-Context

26 this one also began to speak boldly in the synagogue, and Aquilas and Priscilla having heard of him, took him to [them], and did more exactly expound to him the way of God,
27 and he being minded to go through into Achaia, the brethren wrote to the disciples, having exhorted them to receive him, who having come, did help them much who have believed through the grace,
28 for powerfully the Jews he was refuting publicly, shewing through the Writings Jesus to be the Christ.
Young's Literal Translation is in the public domain.