In the same manner, we too have an OBLIGATION as Christians (disciples) to give this same message of Good News (Gospel) to others who do not know this TRUTH (Christ - John 14: 6-7).
The Gospel as it stands and that which we have been tasked to preach is simply :The Death - (Christ, the son of God (also the word of God - John 1:1-5) came to this sinful world and gave up his life for us so we can be justified with God (Romans 3: 21- 22) and accorded son-ship with God the father. The Burial - That Christ was crucified by sinful men (Acts 2:22-24) who saw their own righteousness as against what God salvation brings (Jesus the Messiah) but hallelujah be to God Almighty, his word is eternal. The Resurrection - The word of God (Jesus Christ), didn't rot in the tombs (Acts 2:25-41). He arose on the third day as he promised and lives FOREVER, that anyone who believes in his saving power (Romans 3:25-26), will have ETERNAL LIFE, and although may die (to sin), will resurrect in newness of life spiritually (now and life after) through water baptism (Romans 6:3-14; 8 :1-2).
This is the message of the cross (the gospel / good news). Today the Lord invites us (as Christians) to preach this word to all (irrespective of color or race). It is a necessary obligation as Paul puts in 1 Corinthians 9:16. For those of us reading and hearing this either for the first time or not and still haven't given our lives to Christ, the time is but now. Jesus said anyone (he / she) who believes and is baptized will be saved. After Hearing this message (don't harden your heart), Believe, Repent, Confess your sins, and be Baptized in the name of the Father, the Son, and the Holy Spirit for the forgiveness of sin and receive the gift of the Holy Spirit (our seal through Baptism) 1 Peter 3:21, Colossians 2:12, Acts 2: 38, 41; Romans 10:9-18, Acts 8:26-39, Galatians 3:26-29, Titus 3:4-7
God bless you