There is only one Gospel and that is the gospel of the Lord Jesus Christ. The designation of the concise stories about the life and ministry, written by the four evangelists namely Matthew, Mark, Luke and John as “Four Gospels” is a misnomer. It was not the right application of truth to make the recollections of the four writers as the Gospels according to Matthew, Mark, Luke and John. The written historical facts of the Evangelists should not be labelled as Gospels.
The Gospel or the Good News was originated from Jesus Christ Himself. Mark started his book by saying that it was the beginning of the gospel of Jesus Christ, the Son of God. (Mark 1:1) Then Jesus came into Galilee, preaching the gospel of the kingdom of God.(Mark 1:14) The Lord who was sent from God proclaimed the gospel of the kingdom. The gospel was not earthly in origin but was in the mind of God in heaven.
Now after that John was put in prison,
Jesus came into Galilee,
preaching the gospel of the kingdom of God,
And saying, The time is fulfilled,
and the kingdom of God is at hand:
repent ye, and believe the gospel.
The Good News that was preached by Jesus Christ as recorded by Matthew, Mark, Luke and John were featured in the New Testament of the Bible. With that in mind, it is wrong to attribute to all words written in the Bible from Genesis to Revelation as the “Gospel”. The epistles of the apostles are another “Gospel” if they deviate from the original gospel of Jesus Christ. Always compare their teachings to the gospel of Christ. They should only spread the gospel they learned from their Master and Lord.
6 I marvel that ye are so soon removed from him that called you into the grace of Christ unto another gospel:
7 Which is not another; but there be some that trouble you, and would pervert the gospel of Christ.
8 But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.
9 As we said before, so say I now again, If any man preach any other gospel unto you than that ye have received, let him be accursed.
The followers of Jesus Christ were instructed to spread the gospel. Live by the gospel as a witness of its power. The gospel must come alive through the lives of the believers. The gospel can only be understood as we live by it. We should study and dig deeper to know the gospel. What Jesus says, every word He says is a good news. Be thirsty to the living water. Eat the bread of life.
Go ye into all the world, and preach the gospel to every creature.