I believe it was you that told me they were a contextual addendum to the Old Testament preached exclusively to the Jews and apostles.
In reality the Gospels are the heart of all the Scriptures because they are our principal source for the teachings of the Incarnate Word, Jesus. We would not have the Gospels had the Apostolic Tradition of the Church not preserved them for us and I would not believe in them had not Holy Spirit and the authority of the Catholic Church already moved me.
No that is not THE gospel, those are the gospels.. 2 different things
Jesus preached the gospel..the good news..long before the events of His life were recorded and called gospels
Mat 9:35 And Jesus went about all the cities and villages, teaching in their synagogues, and preaching the gospel of the kingdom, and healing every sickness and every disease among the people.
The Gospel Christ preached and that was taught by the disciples and apostles was repent and believe ...The good news is an answer to the bad news.. the bad news is men are fallen sinners that can not save themselves.. the good news is that Christ has come to redeem them, to pay the price to buy them back ...He is the propitiation for their sin.. He saves them from their sin
What we call the gospels in the NT is the record of the life of Christ, that He kept the law we can never keep,that He is the incarnate God.
Because it relates the time before the New Testament was instituted it is actually Old Covenant ..as it reflects the time before the institution of the New Testament and the beginning of the church.
NL..ALL scripture is the word of God.. all scripture is about Christ..