The Gospel is: εὐαγγέλιον – euaggelion; a reward for good tidings; the glad tidings of the kingdom of God soon to be set up, and subsequently also of Jesus the Messiah, the founder of this kingdom. After the death of Christ, the term Gospel comprises also the preaching of (concerning) Jesus Christ as having suffered death on the cross to procure eternal salvation for the men in the kingdom of God, but as restored to life and exalted to the right hand of God in heaven, thence to return in majesty to consummate the kingdom of God; the glad tidings of salvation through Jesus Christ; the proclamation of the grace of God manifest and pledged in Jesus Christ; as the Messianic rank of Jesus was proved by His words, His deeds, and His death, the narrative of the sayings, deeds, and death of Jesus Christ came to be called the Gospel or glad tidings.
The Gospel shall be proclaimed in all the inhabited world!
The Gospel must be preached, to the Jews; even to all, without any distinction of people, Jews and Gentiles, Barbarians, Scythians, bond and free, male and female, rich and poor, greater or lesser sinners, even to all mankind; than which, nothing was more provoking to the Jews; who would, if they could, have revoked and made null this commission of Jesus Christ. The Gospel is the word of peace and reconciliation, by His atoning sacrifice; the doctrine of free and full pardon by His blood; and of justification by His righteousness; and of complete salvation by Him: even every doctrine relating to His person, as God and man; to every office of His, as prophet, priest, and king; to His incarnation, sufferings, and death, His resurrection, ascension, session at the right hand of God, and intercession for His people, and second coming to judgment; with every doctrine relating to the grace of God, of the Father in election, and the covenant of peace, of the Son in redemption, and of the Spirit in regeneration and sanctification: all which he must be published and declared in the most free, plain, and open manner, with all boldness, faithfulness, and constancy!
“Now brothers, I want to clarify for you the Gospel I proclaimed to you; you received it and have taken your stand on it. You are also saved by it, if you hold to the message I proclaimed to you—unless you believed for no purpose. For I passed on to you as most important what I also received:
that Christ died for our sins
according to the Scriptures,
that He was buried,
that He was raised on the third day
according to the Scriptures…” ~ 1 Corinthians 15:1-4
In The Hands of the Refiner 