(1) The Gospel is that Jesus is the Christ! (Mt 16:16)
(2) What does the Christ mean? Christ means the Anointed One. Only three jobs are anointed in the old testament; kings, priests, and prophets.
(3) All the bible talks about Christ! (Gen 3:15, Lk 24:27,44, Acts 28:23)
(4) Why do we need Christ? Because of the original sin We were image of God in the beginning. (Gen 1:27) We enjoyed all the blessing of God. (Gen 1:28) But our ancestor, Adam deceived by Satan. (Gen 3:1-6) So, all the his descendants became slavers of Satan. (Jn 8:44) Adam disobeyed God's Word, so all the his descendants became sinners. (Rom 3:23) As the result, all the people are separated from God. Their destiny become Hell. (Isa 49:2)
(5) To solve these fundamental problems, we need Christ! Jesus came here as the true King, who broke Satan's head. (1 Jn 3:8) Jesus came here as the true Priest, who forgave our sin on the cross. (Mk 10:45) Jesus came here as the true Prophet, who is the way to meet God. (Jn 14:6) Jesus fulfilled Christ job on the cross. (Jn 19:30) So, Jesus is the Christ, who is the true King, the true Priest, and the true Prophet. (Mt 16:16) When we believe Jesus as the Christ, we become children of God.(1 Jn 5:1) When we believe Jesus as the Christ, we become free from the law of sin and death.(Rm 8:2) When we believe Jesus as the Christ, our citizenship is in heaven. (Phil 3:20) In Christ, anything cannot be a problem to us. (Phil 4:13)