Commentaries:
Robertson's Word Pictures (NT)
If so be that (ei ge). "If indeed." Condition of first class with aorist indicatives here, assumed to be true (hkousate kai edidaxqhte).
Even as truth is in Jesus (kaqwv estin alhqeia en tw Ihsou). It is not clear what Paul's precise idea is here. The Cerinthian Gnostics did distinguish between the man Jesus and the aeon Christ. Paul here identifies Christ (verse Ephesians 4:20) and Jesus (verse Ephesians 4:21). At any rate he flatly affirms that there is "truth in Jesus" which is in direct opposition to the heathen manner of life and which is further explained by the epexegetical infinitives that follow (apoqesqai, ananeousqai de, kai endusasqai).
Other Robertson's Word Pictures (NT) entries containing Ephesians 4:21:
Ephesians 4:21
Titus 1:14
1 Peter 1:18
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