Source - Gospel of God (Rom 1:1,15:16, 2Cor 11:7, 1Th 2:2, 8, 9, 1Pet 4:17)
Subject - Gospel of Christ (Rom 1:16, 15:19, 29, 1Cor 9:12, 18, 2Cor 4:4, 9:13, 10:14, Gal 1:7, Phil 1:27, 1Th 3:2)
Saviour - Gospel of His Son (Rom 1:9)
Standing - Gospel of the Grace of God (Acts 20:24)
Salvation - Gospel of your Salvation (Eph 1:13)
Standard - Gospel of our Lord Jesus Christ (2Th 1:8)
Serenity - Gospel of Peace (Rom 10:15, Eph 6:15)
Superiority - Glorious Gospel (2Cor 4:4, 1Tim 1:11)

Read Part 1, Part 2.