The Gospel and a life in a manner worthy of the gospel 

that were proclaimed by Apostle Paul and Apostle John?

The Gospel of Jesus Christ that was proclaimed by Apostle Paul was

Concerning “His Son, who was born of a descendant of David according to the flesh,

who was declared the Son of God with power by the resurrection from the dead,

according to the Spirit of holiness, Jesus Christ our Lord (Rom 1:3-4),

That “Christ died for our sins according to the Scriptures,

and that He was buried, and that He was raised on the third day according to the Scriptures”

(1 Cor. 15:3-4).

And Apostle Paul said, “Only conduct yourselves in a manner worthy of the gospel of Christ” (Phil. 1:27).

The Gospel of Jesus Christ that was proclaimed by Apostle John was

Concerning the Word of life which was from the beginning (Jesus’ divinity),

“The life appeared” that is “the eternal life” (Jesus’ humanity) (1 Jn. 1:1-2).

And a life in a manner worthy of the gospel of Christ is

To live like the children of God who is the light and in Him there is no darkness at all (v. 5).

The life as the children of light is to hate lies and live by the truth (v. 6) as those who have eternal life

(v. 2), love their brothers (2:9) and live righteous life (3:12).