The Gospel is the good news of God loving and saving lost mankind through the ministry in word and deed of his Son, Jesus Christ.
1 Corinthians 1-4
Now, brothers and sisters, I want to remind you of the gospel I preached to you, which you received and on which you have taken your stand. 2 By this gospel you are saved, if you hold firmly to the word I preached to you. Otherwise, you have believed in vain. 3 For what I received I passed on to you as of first importance : that Christ died for our sins according to the Scriptures, 4 that he was buried, that he was raised on the third day according to the Scriptures,
Romans 5:15 But the free gift is not like the trespass. For if many died through one man’s trespass, much more have the grace of God and the free gift by the grace of that one man Jesus Christ abounded for many.
12But to all who did receive him, who believed in his name, he gave the right to become children of God, 13who were born, not of blood nor of the will of the flesh nor of the will of man, but of God.
1 John 5:11-12
11And this is the testimony, that God gave us eternal life, and this life is in his Son. 12Whoever has the Son has life; whoever does not have the Son of God does not have life.
Soli Deo Gloria