Acts 18:5

18:5 Now when Silas and Timothy arrived from Macedonia, Paul became wholly absorbed with proclaiming the word, testifying to the Jews that Jesus was the Christ.

Acts 20:24

20:24 But I do not consider my life worth anything to myself, so that I may finish my task and the ministry that I received from the Lord Jesus, to testify to the good news of God’s grace.

Acts 23:11

23:11 The following night the Lord stood near Paul and said, “Have courage, for just as you have testified about me in Jerusalem, so you must also testify in Rome.”