The word gospel means ‘good news’ and is a translation of the Greek word evangelion. This is the same word we take our English word evangelist from. Thus proclaiming the good news of Jesus’ death, burial and resurrection is the true job of an evangelist.
1Cor. 15:1 Moreover, brethren, I declare unto you the gospel which I preached unto you, which also ye have received, and wherein ye stand; 1Cor. 15:3 For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures; 4 And that he was buried, and that he rose again the third day according to the scriptures: The good news as preached by the disciples of Christ was the death, burial and resurrection of Jesus Christ.
We must identify with Jesus’ death. Are ‘old man’ must be crucified. The ‘old man’ is our old life before Christ and before we had faith n Christ. What this means is we must forgo the sin that we had in our life before Christ, repentance is a key part in the death. To repent means one must turn completely from our sinful ways and follow Christ completely. As was told in the parable of the rich man, the one thing he lacked was to sell all his possessions and follow Christ. He could not do this for he did not have full commitment to Christ. Whatever things we are holding onto must be let go in order to grab a hold of Jesus and follow Him completely.
Rom. 6:3 Know ye not, that so many of us as were baptized into Jesus Christ were baptized into his death? 4 Therefore we are buried with him by baptism into death: that like as Christ was raised up from the dead by the glory of the Father, even so we also should walk in newness of life. This is the teaching of Paul to the church in Rome concerning baptism. When a man/woman is baptized in Jesus’ name by completely immersing him or herself in water they are symbolically being buried just as Jesus was. This represents the death of sin in our life. Sin is buried and should no longer have an affect on our lives after our conversion experience described in 1 Corinthians 15:1-4.
The resurrection happens when the Spirit of God enters a body to quicken or bring to life that body. Rom. 6:4 Therefore we are buried with him by baptism into death: that like as Christ was raised up from the dead by the glory of the Father, even so we also should walk in newness of life. 5 For if we have been planted together in the likeness of his death, we shall be also in the likeness of his resurrection: Again Paul describes the resurrection in Rom. 6:11 Likewise reckon ye also yourselves to be dead indeed unto sin, but alive unto God through Jesus Christ our Lord.