'Gospel' in the Bible

I am astonished and extremely irritated that you are so quickly shifting your allegiance and deserting Him who called you by the grace of Christ, for a different [even contrary] gospel;

which is really not another [gospel]; but there are [obviously] some [people masquerading as teachers] who are disturbing and confusing you [with a misleading, counterfeit teaching] and want to distort the gospel of Christ [twisting it into something which it absolutely is not].

But even if we, or an angel from heaven, should preach to you a gospel contrary to that which we [originally] preached to you, let him be condemned to destruction!

As we have said before, so I now say again, if anyone is preaching to you a gospel different from that which you received [from us], let him be condemned to destruction!

For I want you to know, believers, that the gospel which was preached by me is not man’s gospel [it is not a human invention, patterned after any human concept].

to reveal His Son in me so that I might preach Him among the Gentiles [as the good news—the way of salvation], I did not immediately consult with anyone [for guidance regarding God’s call and His revelation to me].

I went up [to Jerusalem] because of a [divine] revelation, and I put before them the gospel which I preach among the Gentiles. But I did so in private before those of reputation, for fear that I might be running or had run [the course of my ministry] in vain.

But we did not yield to them even for a moment, so that the truth of the gospel would continue to remain with you [in its purity].

But from those who were of high reputation (whatever they were—in terms of individual importance—makes no difference to me; God shows no partiality—He is not impressed with the positions that people hold nor does He recognize distinctions such as fame or power)—well, those who were of reputation contributed nothing to me [that is, they had nothing to add to my gospel message nor did they impose any new requirements on me].

But on the contrary, they saw that I had been entrusted with the gospel to the uncircumcised (Gentiles), just as Peter had been [entrusted to proclaim the gospel] to the circumcised (Jews);

But when I saw that they were not being straightforward about the truth of the gospel, I told Cephas (Peter) in front of everyone, “If you, being a Jew, live [as you have been living] like a Gentile and not like a Jew, how is it that you are [now virtually] forcing the Gentiles to live like Jews [if they want to eat with you]?”

This is all I want to ask of you: did you receive the [Holy] Spirit as the result of obeying [the requirements of] the Law, or was it the result of hearing [the message of salvation and] with faith [believing it]?

The Scripture, foreseeing that God would justify the Gentiles by faith, proclaimed the good news [of the Savior] to Abraham in advance [with this promise], saying, “In you shall all the nations be blessed.”

On the contrary, you know that it was because of a physical illness that I [remained and] preached the gospel to you the first time;

From now on let no one trouble me [by making it necessary for me to justify my authority as an apostle, and the absolute truth of the gospel], for I bear on my body the branding-marks of Jesus [the wounds, scars, and other outward evidence of persecutions—these testify to His ownership of me].