The gospel is this: the Kingdom of God has come through Jesus of Nazareth. He is Christ, God's anointed King; God's one and only Son. Christ died on the cross for our sins, he was buried, and he was resurrected on the third day in accordance with the Scriptures. In His great love and by His amazing grace, God our Father saves everyone who repents of their sin, believes in the gospel, and follows Jesus in the power of the Holy Spirit. When King Jesus returns on the last day, the great Day of Judgement, everyone who followed him to the end will enter the eternal kingdom of God.
[Mk. 1:14-17, 8:27-34, 1 Cor. 15:1-5, Jn. 3:16, Eph. 2:8-10, Rom. 2:16, Matt. 24:13]