Only one GOSPEL

The New King James Version Chapter 1

6 I marvel that you are turning away so soon efrom Him who called you in the grace of Christ, to a different gospel, 7 fwhich is not another; but there are some gwho trouble you and want to hpervert 1the gospel of Christ. 8 But even if iwe, or an angel from heaven, preach any other gospel to you than what we have preached to you, let him be 2accursed. 9 As we have said before, so now I say again, if anyone preaches any other gospel to you jthan what you have received, let him be accursed.

10 For kdo I now lpersuade men, or God? Or mdo I seek to please men? For if I still pleased men, I would not be a bondservant of Christ.

The New King James Version Chapter 11

For if he who comes preaches another Jesus whom we have not preached, or if you receive a different spirit which you have not received, or a hdifferent gospel which you have not accepted—you may well put up with it!

why did Paul ask if there was a another Gospel