The Gospel [Some Notes]

Gospel was adopted as a technical term for the Christian message which is succinctly stated by Paul in 1 Cor 15:1-4 (notes 1Co 15:1; 15:2; 15:3; 15:4) and finds complete expression in the four Gospels and the epistle to the Romans. Succinctly stated, the Gospel is not just "getting saved" as so many believe, but it is "progressing in salvation" (growth in Christ-likeness). 
The writers of the New Testament adapted the term Gospel as God's glorious message of salvation for lost otherwise hopeless, helpless sinners. Euaggelion is found in several combination phrases, each describing the gospel like a multifaceted jewel in various terms from a different viewpoint (from the NASB, 1977):

1. the gospel of the kingdom (Mt 4:23+, Mt 9:35+, Mt 24:14+)
2. the gospel of Jesus Christ, the Son of God (Mk 1:1+) because it centers in Christ
3. the gospel of God (Mk 1:14+, Ro 15:16+, 2Co 11:7+, 1Th 2:2+, 1Th 2:8,9+, 1Pe 4:17+) because it originates with God and was not invented by man
4. the gospel of the kingdom of God (Lu 16:16+)
5. the gospel of the grace of God (Acts 20:24+, Ro 1:1+),
6. the gospel of His Son (Ro 1:9+)
7. the gospel of Christ (Ro 15:19+, 2Co 2:12+, 2Co 9:13+, 2Co 10:14+, Gal 1:7+, Phil 1:27+, 1Th 3:2+)
8. the gospel of the glory of Christ (2Co 4:4+)
9. the gospel of your salvation (Eph 1:14+)
10. the gospel of peace (Eph 6:15+)
11. the gospel of our Lord Jesus (2Th 1:8+)
12. the glorious gospel of the blessed God (1Ti 1:11+)