I'll tell you what the gospel is not; it is NOT a salvific formula or incantation whereby one can invoke the Spirit to grant immortality. I believe there's probably many here that have exactly that notion of it.
1 Cor 15
1 Moreover, brethren, I declare to you the
gospel which I preached to you, which also you received and in which you stand, 2 by which also you are
saved, if you hold fast that word which I preached to you—unless you believed in vain.
3 For I delivered to you first of all that which I also received: that
Christ died for our sins according to the Scriptures, 4 and that He was buried, and that
He rose again the third day according to the Scriptures, 5 and that He was seen by Cephas, then by the twelve. 6 After that He was seen by over five hundred brethren at once, of whom the greater part remain to the present, but some have fallen asleep. 7 After that He was seen by James, then by all the apostles. 8 Then last of all He was seen by me also, as by one born out of due time.
9 For I am the least of the apostles, who am not worthy to be called an apostle, because I persecuted the church of God. 10 But by the grace of God I am what I am, and His grace toward me was not in vain; but I labored more abundantly than they all, yet not I, but the grace of God which was with me. 11 Therefore, whether it was I or they, so we
preach and so you
believed.
The gospel in a nutshell. The gospel is the good news that Christ died for our sins. This matters because the wages of sin is eternal death. Christ rose from the dead. This matters because we can know that we will have eternal life with Christ. All this is possible because the gospel has been preached to us and we
believed. Eternal life is received through
faith in the gospel (good news) that Christ paid for our sins and grants us eternal life.
I don't know
what gospel you're preaching.