In the strictest sense, I think they mean the same thing; namely, those whom God has saved, He will preserve and not allow to fall away. It is legitimate to ask, Are those two ways of speaking equally ...
Clearly, the Puritans believed that it was possible to experience doubt: “Lord, I believe; help Thou my unbelief!” It seems clear to me that the Apostle John ... How is it that I can really be saved ...