'Gospel' in the Bible

I am amazed that you are so quickly turning away from Him who called you by the grace of Christ and are turning to a different gospel—

not that there is another gospel, but there are some who are troubling you and want to change the good news about the Messiah.

But even if we or an angel from heaven should preach to you a gospel other than what we have preached to you, a curse be on him!

As we have said before, I now say again: If anyone preaches to you a gospel contrary to what you received, a curse be on him!

Now I want you to know, brothers, that the gospel preached by me is not based on human thought.

I went up according to a revelation and presented to them the gospel I preach among the Gentiles—but privately to those recognized as leaders—so that I might not be running, or have run the race, in vain.

But we did not give up and submit to these people for even an hour, so that the truth of the gospel would be preserved for you.

On the contrary, they saw that I had been entrusted with the gospel for the uncircumcised, just as Peter was for the circumcised,

But when I saw that they were deviating from the truth of the gospel, I told Cephas in front of everyone, “If you, who are a Jew, live like a Gentile and not like a Jew, how can you compel Gentiles to live like Jews?”

you know that previously I preached the gospel to you because of a physical illness.