A helpful alternative to a gospel

reduced to (the assurance of) individual salvation?

Belief in God's good work in the world in Christ Jesus includes saving benefits for believers. But belief in my own personal salvation as the entirety of the gospel itself may not include God's world, my neighbors or God's will being done on earth as it is in heaven.

In Scripture the core of the good news is God's righteous, gracious and just reign (Isa 52:7) breaking into this world in the person of Jesus *Christ (Isa 9:2-7; 52:1-10; Matthew 4:12-17, 23-24; 6:9-10; 24:14; 28:18-20; Mark 1:14-15; Gal 1:6-10; Col 1:3-14; 1 Cor 15:1-28). This does not happen apart from the King's rejection, death (Isa 52:13-53:11) and resurrection (Isa 53:12). But the rejection, death and resurrection of the King does not remove his throne.

These events establish - what has always been the case for the God of Israel (Psalm 10:16; 45:6; 93:1-2; 97:1; 98:6; 99:1-2; 145:1-13) - the Son’s Reign as King in history / this world (Matt 28:18-20; Acts 2:14-36; Rom 1:1-5; 1 Cor 15:20-28 [the Son reigns as King NOW and in the future will turn his royal authority back over to his Father]; Col 1:13-14; cf. Psalm 2 with 2 Sam 7:8-14 and Psalm 110:1 with Psalm 8:6; Matt 22:41-45 (pars in Mark 12:35-37 & Luke 20:41-44); Acts 2:34-36; 1 Cor 15:25; Eph 1:20-22; and Heb 1; 2; 8; 10:12-13; and cf. 2 Tim 2:8-10 with Acts 28:30-31).

This is why Jesus announced, embodied and clarified the kingdom of God (often by deconsructing old wine skins) and Paul announced the gospel of *Christ. Because for a Jew like Paul in the first century, "Christ" is the Greek way to say/write "Messiah" and "Messiah" meant - denotatively speaking - "the annointed" = the long anticipated King like David. What happens if we read through Paul's letters reading "Mesiah" or "King" when we see the English term "Christ" on loan from Greek? Why do we translate agape but not Christos?