be an impossibility, since every sinner who receives the gift of saving faith is preserved by the Holy Spirit until the day of Christ (see John 10:28; Phil. 1:6). What apostasy does mean, however, is that someone who once claimed to be a Christian has renounced the gospel. Here again, as he does throughout this epistle, Paul refers to Christianity as “the faith.” He has in mind those central doctrines that rest on the solid foundation of Holy Scripture and are necessary to saving faith: the sovereignty
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