In chapter nine, Saul of Tarsus was saved by trusting in Christ. In verse 9:6, we are told that Paul's first words, when he understood that it was Jesus speaking to him, were "Lord, what wilt thou have me to do?" After having his eyesight returned, Luke says, "And straightway (Paul) preached Christ in the synagogues, that He is the Son of God" (v. 9:20). Although it is obvious that Paul preached the Gospel from that point on in his life, the word, "Gospel," is not mentioned again until Acts 14:21.
In Acts 15, Luke wrote something that amazes me. In verses 1-5, men from Judaea had been insisting that in order for a Gentile to become a Christian, he needed to be circumcised; in other words, become a Jew. I find it incredible that the Apostles had to come "together for to consider of this matter" (v. 6). It seems clear to me that even the Apostles had not yet grasped the fact that the Gospel is salvation by faith and not works. In verse 15:12, Paul explained to them the Gospel! Later, in his second epistle, Peter wrote, "And account that the longsuffering of our Lord is salvation; even as our beloved brother Paul also according to the wisdom given unto him hath written unto you; as also in all his epistles, speaking in them of these things; in which are some things hard to be understood...." (3:15-16).
The last two references to the Gospel in Acts are found in verse 16:10, and 20:24. In the first, Paul was led to go to Macedonia to preach the Gospel unto them." In the latter, it seems fitting to conclude our study with the following quote:
"Testifying both to the Jews, and also to the Greeks, repentance toward God, and faith toward our Lord Jesus Christ. And now, behold, I go bound in the Spirit unto Jerusalem, not knowing the things that shall befall me there: save that the Holy Ghost witnesseth in every city, saying that bonds and afflictions abide me. But none of these things move me, neither count I my life dear unto myself, so that I might finish my course with joy, and the ministry, which I have received of the Lord Jesus, to testify the Gospel of the grace of God" (Acts 20:21-24).