1. Paul’s work : Testifying Jesus is the Christ (Acts 18:5-11)
    Acts 9:22, Act 17:1-3, Acts 28:23,30-31

Paul’s ministry was to testify of Jesus as the Christ. Paul interprets all the contents of the Old Testament and testifies that the Christ prophesied in the Old Testament is Jesus. (Acts 9:22, Act 17:1-3, Acts 18:5-11, Acts 28:23,30-31)

Acts 9:22 But Saul increased the more in strength, and confounded the Jews which dwelt at Damascus, proving that this is very Christ.

Act 17:1 Now when they had passed through Amphipolis and Apollonia, they came to Thessalonica, where was a synagogue of the Jews:
2 And Paul, as his manner was, went in unto them, and three sabbath days reasoned with them out of the scriptures,
3 Opening and alleging, that Christ must needs have suffered, and risen again from the dead; and that this Jesus, whom I preach unto you, is Christ.

Acts 18:5 And when Silas and Timotheus were come from Macedonia, Paul was pressed in the spirit, and testified to the Jews that Jesus was Christ.

6 And when they opposed themselves, and blasphemed, he shook his raiment, and said unto them, Your blood be upon your own heads; I am clean; from henceforth I will go unto the Gentiles.

7 And he departed thence, and entered into a certain man’s house, named Justus, one that worshipped God, whose house joined hard to the synagogue.

8 And Crispus, the chief ruler of the synagogue, believed on the Lord with all his house; and many of the Corinthians hearing believed, and were baptized.

9 Then spake the Lord to Paul in the night by a vision, Be not afraid, but speak, and hold not thy peace:

10 For I am with thee, and no man shall set on thee to hurt thee: for I have much people in this city.

11 And he continued there a year and six months, teaching the word of God among them.

Acts 28:23 And when they had appointed him a day, there came many to him into his lodging; to whom he expounded and testified the kingdom of God, persuading them concerning Jesus, both out of the law of Moses, and out of the prophets, from morning till evening.
30 And Paul dwelt two whole years in his own hired house, and received all that came in unto him,
31 Preaching the kingdom of God, and teaching those things which concern the Lord Jesus Christ, with all confidence, no man forbidding him.