'Gospel' in the Bible

I marvel that ye are so quickly removing from him that called you in the grace of Christ unto a different gospel;

which is not another gospel only there are some that trouble you, and would pervert the gospel of Christ.

But though we, or an angel from heaven, should preach unto you any gospel other than that which we preached unto you, let him be anathema.

As we have said before, so say I now again, if any man preacheth unto you any gospel other than that which ye received, let him be anathema.

For I make known to you, brethren, as touching the gospel which was preached by me, that it is not after man.

And I went up by revelation; and I laid before them the gospel which I preach among the Gentiles but privately before them who were of repute, lest by any means I should be running, or had run, in vain.

to whom we gave place in the way of subjection, no, not for an hour; that the truth of the gospel might continue with you.

but contrariwise, when they saw that I had been intrusted with the gospel of the uncircumcision, even as Peter with the gospel of the circumcision

But when I saw that they walked not uprightly according to the truth of the gospel, I said unto Cephas before them all, If thou, being a Jew, livest as do the Gentiles, and not as do the Jews, how compellest thou the Gentiles to live as do the Jews?

And the scripture, foreseeing that God would justify the Gentiles by faith, preached the gospel beforehand unto Abraham,'saying, In thee shall all the nations be blessed.

but ye know that because of an infirmity of the flesh I preached the gospel unto you the first time: