You have said many things over the space of time and I have not responded. You have now just said.............
"Each dispensation had a different gospel.".
I have no desire to be mean spirited to you but you either do not understand Dispensationalism or you are coping and pasting some really bad teaching.
May I say with all due respect to you that I for one agree with the words of H.A. Ironside, a well known and much loved Bible teacher, which should be sufficient to state the mainline Dispensational viewpoint. Here is what Ironside said :
"Let one point be absolutely clear: No one was ever saved in any dispensation on any other ground than the finished work of Christ. In all the ages before the cross, God justified men by faith; in all the years since, men have been justified in exactly the same way. Adam believed God and was clothed with coats of skin, a picture of one becoming the righteousness of God in Christ. Abraham believed God, and it was counted to him for righteousness. Nevertheless, afterwards he was circumcised; but that circumcision, the apostle tells us, was simply a seal of the righteousness he had by faith. And throughout all the Old Testament dispensation, however legalistic Jews may have observed the ordinance of circumcision and thought of it as having in itself some saving virtue, it still remained in God's sight, as in the beginning, only a seal, where there was genuine faith, of that righteousness which He imputed. (Wrongly Dividing the Word of Truth, p57,58)
Needless to say, the person who claims that Dispensationalism teaches different methods of salvation in different dispensations completely misunderstands the point of Dispensational doctrine! Dispensationalism is not about the method of God's salvation, but the methods of God's testing of man. In each Dispensation, God gives a different set of instructions. The instructions are for pleasing and obeying God, not for obtaining salvation. In each dispensation, man proves that whatever the circumstances, he is unable to please or obey God.
I have NEVER found ANY " ISM" to be the truth .
What an ism does is take A truth and endevours to read and understand all scripture the the prism of that truth , This is not possible and sooner or later those who go down that bypass will have to deny scriptures or else twist and out them out of context to make them 'fit' the ISM.
The devil by such methods wins both ways or can.
One by the error that is now beign propagated .
Two others who see both teh contradictions and errors of the ISM often deny the very truth it is based upon . In this case the sound doctrine of the various dispensations of God .
The Dispensations of God is a wonderful truth and doctrine . But like any other sound doctrine is one PART of a body of dcotrine that like the bones in a body work together and give the body strength and helpt it to stand when they work togther in harmony.