And he shall send Jesus Christ, which before was preached unto you: Act 3:20 Peter is speaking of the return of Jesus Christ.     He has no idea that it will be at least 2000 years later before the Lord Jesus returns.

And daily in the temple, and in every house, they ceased not to teach and preach Jesus Christ. Act 5:42 The Gospel was fresh and exciting in those days.     Now we live in a society which considers the Gospel passe.     We must find a way to reach the younger generation for Christ recognizing that their parents may never be converted.

Then Philip opened his mouth, and began at the same scripture, and preached unto him Jesus. Act 8:35

And some of them were men of Cyprus and Cyrene, which, when they were come to Antioch, spake unto the Grecians, preaching the Lord Jesus. Act 11:20

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. Act 17:3

Then certain philosophers of the Epicureans, and of the Stoicks, encountered him.     And some said, What will this babbler say?     other some, He seemeth to be a setter forth of strange gods: because he preached unto them Jesus, and the resurrection. Act 17:18

Now to him that is of power to stablish you according to my gospel, and the preaching of Jesus Christ, according to the revelation of the mystery, which was kept secret since the world began, Rom 16:25 Paul reminds them that it was his revelation of the Gospel which will give them power to stand against the persecution.

For the Son of the Holy Spirit, Jesus Christ, who was preached among you by us, even by me and Silvanus and Timotheus, was not yea and nay, but in him was yea. 2Co 1:19 We have a problem in much of Christianity where the Lord is painted as schizophrenic: He loves me, he loves me not.      This is not the Gospel.     Paul was consistent in his presentation of the Holy Spirit being our Saviour through Christ Jesus by unbroken love and Grace.

For we preach not ourselves, but Christ Jesus the Lord; and ourselves your servants for Jesus` sake. 2Co 4:5 I am not the proof of the Holy Spirit and neither is any man.     Christ Jesus is the proof.     He is the Truth and He has shared His Holy Spirit, the Spirit Of Truth, to reveal Himself to as many as will hear, believe and receive Him.