'Gospel' in the Bible

I am astonished that you are so quickly deserting the one who called you by the grace of the Messiah and, instead, are following a different gospel,

not that another one really exists. To be sure, there are certain people who are troubling you and want to distort the gospel about the Messiah.

But even if we or an angel from heaven should proclaim to you a gospel contrary to what we proclaimed to you, let that person be condemned!

What we have told you in the past I am now telling you again: If anyone proclaims to you a gospel contrary to what you received, let that person be condemned!

For I want you to know, brothers, that the gospel that was proclaimed by me is not of human origin.

I went in response to a revelation, and in a private meeting with the reputed leaders, I explained to them the gospel that I'm proclaiming to the gentiles. I did this because I was afraid that I was running or had run my life's race for nothing.

But we did not give in to them for a moment, so that the truth of the gospel might always remain with you.

In fact, they saw that I had been entrusted with the gospel for the uncircumcised, just as Peter had been entrusted with the gospel for the circumcised.

But when I saw that they were not acting consistently with the truth of the gospel, I told Cephas in front of everyone, "Though you are a Jew, you have been living like a gentile and not like a Jew. So how can you insist that the gentiles must live like Jews?"

Because the Scripture saw ahead of time that God would justify the gentiles by faith, it announced the gospel to Abraham beforehand when it said, "Through you all nations will be blessed."

You know that it was because I was ill that I brought you the gospel the first time.