The one and only gospel of the Bible is directly connected to and associated with a conditional security, but parts of it are often avoided by dangerous teachers of our day. To be more precise, the godless grace changers do that so they can present their distortions about eternal security without even mentioning destructive Scriptures to the contrary:
By this gospel you are saved, if you hold firmly to the word I preached to you. Otherwise, you have believed in vain. (1 Cor 15:2)
Paul wrote those important truths to people who had been saved (1 Cor. 1:2) and wanted those Christians to know the facts that they could believe in vain if they did not hold on to the gospel they heard from him. It was up to them. It was their responsibility. Their negligence with this would adversely affect their salvation and nothing less. False teachers were a serious threat back then, as they are today. Again, Paul was not writing to mere professing Christians or false converts, but to genuine Christians. This alone is an important fact about salvation, but in definite disharmony with Calvinism’s fifth point, the deadly perseverance of the saints. If you are Christian, remember your salvation responsibilities under grace, as stated in 1 Cor. 15:2. Do NOT be deceived by a grace changer!