Paul's thought here is consistent with many ancient Israelite traditions which portray the reality of individual and sub-group apostasies within the elect community while at the same time maintaining the continuity of that community as a whole. In every episode of Israel's tradition history, a faithful remnant survives after apostasy and judgment/expulsion occur (e.g., Deuteronomy 4:23-31). Paul habitually cites or echoes the Jewish traditions for authoritative support of his arguments, and for him, there is an analogy between Israel and Christians in relation to election (Romans 11; 1 Corinthians 10). It seems implausible that he would have divorced himself so completely from the presuppositions of his Jewish heritage that he now teaches that individuals which make up the elect body are each unconditionally preserved so as to never be able to completely fall away.Paul and Apostasy, 209-210.
