The best way to know what the Gospel is, is to see what the Bible has to say about the Gospel. The Gospel the Lord gave to the 12 apostles:
Matthew 10:7 And as ye go, preach, saying, The kingdom of heaven is at hand.
Peter (and the apostles) preached same gospel as the Lord Jesus.
- Acts 8:25 And they, when they had testified and preached the word of the Lord, returned to Jerusalem, and preached the gospel in many villages of the Samaritans.
- 1 Peter 1:12 Unto whom it was revealed, that not unto themselves, but unto us they did minister the things, which are now reported unto you by them that have preached the gospel unto you with the Holy Ghost sent down from heaven; which things the angels desire to look into.
- 1 Peter 1:25 But the word of the Lord endureth for ever. And this is the word which by the gospel is preached unto you.
- 1 Peter 4:6 For for this cause was the gospel preached also to them that are dead, that they might be judged according to men in the flesh, but live according to God in the spirit.
- 1 Peter 4:17 For the time is come that judgment must begin at the house of God: and if it first begin at us, what shall the end be of them that obey not the gospel of God?
- And during the Tribulation, the same gospel will be preached:
Revelation 14:6 And I saw another angel fly in the midst of heaven, having the everlasting gospel to preach unto them that dwell on the earth, and to every nation, and kindred, and tongue, and people,
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