Acts 26:22-23

God had stood by Paul and had helped him, as He had promised (Acts 26:22; cf Acts 26:17). Paul preached a message thoroughly in harmony with Israel’s faith (cf. Acts 3:18; Acts 17:3). Acts 26:23 may be Luke’s condensation of Paul’s exposition of many Old Testament messianic prophecies that Jesus fulfilled (e.g., Isaiah 42:6; Isaiah 49:6; Isaiah 53:10; Isaiah 60:3). Many of the Jews rejected the ideas of a suffering Messiah, His resurrection from the dead, and direct ministry to Gentiles, but Paul found support for these in the Old Testament.

"Here in substance is the Gospel that Paul preached and that believers ought always to proclaim, ’that Christ died for our sins according to the scriptures; and that he was buried, and that he rose again the third day according to the scriptures’ (1 Corinthians 15:3-4)." [Note: The New Scofield . . ., p. 1204.]