When we evangelise, we are to declare a definite and specific message to the hearers. It is not merely to teach general truths about God’s existence or the moral law; we have to present Christ Jesus, the divine Son, who became man at a particular point in world history (incarnation) in order to save a ruined and fallen race.
We are to present Christ Jesus Himself, living Saviour and reigning Lord – it is not just presenting the teaching and example of the historical Jesus or even the truth about his saving work.

It is not even to set forth the living Jesus as Helper and Friend, without reference to His saving work on the cross – we are to present Jesus as Christ, God’s anointed Servant, fulfilling the tasks of His appointed office as Priest and King. He is to be seen as the ‘one mediator between God and men (2 Tim. 2:5), who “suffered once for sins.. that He might bring us to God” (1 Peter 3:18).

Through Him alone, men may come to put their trust in God – this is according to HIs claim, “I am the way, and the truth, and the life. No one comes to the Father except through me” (John 14:6).

We are to proclaim Him as the Saviour who ‘came into the world to save sinners’ (1 Tim. 1:15) and ‘redeemed us from the curse of the law by becoming a curse for us’ (Gal. 3:13); He is the one ‘who delivers us from the wrath to come’ (1 Thess. 1:10) and He is the one who died for us and rose again, that He might be Lord both of the dead and of the living (Rom. 14:9).

It is no wonder that some theologians declare that the gospel is Christ. Jesus is a Redeemer who is truly human; as such, He can identify with us, for He went through our experience and thus can understand what we go through. He is our High Priest and understands how we suffer.

Because Jesus, as human, lived a perfect life on earth, He could become the perfect substitute for us – He willingly suffered the penalty for our sin. And because He lived perfectly in obedience, He was the right, adequate, and perfect substitute for our sin.

And because He took our sin upon HImself, having identified with us, when He rose from the grave and ascended to the Father, He became the perfect advocate for us.
But Jesus is also God and because He is God, He can accomplish the purposes for which He came – this includes the fact that He can rule the world and the universe after His ascension to the Father’s side, and death could not defeat Him and He rose again from the grave and ascended to be, not just ruler, but also our intercessor and advocate. Jesus, perfect man, perfect God – the only Redeemer we need and the only one to be presented and proclaimed in our specific and definite message in our evangelism.

There are those who claim they believe in Jesus Christ, but it is not Jesus Christ as presented in the Scripture and proclaimed as above. Jesus to some may be just a great prophet; to some, he is a great teacher, a holy man; he may be seen as ‘one of the many gods they believe in’ but if we do not present Jesus Christ as the specific and definite message (elaborated above) in our evangelism, then we are not evangelising in the true sense of the word.