Commentaries:
Robertson's Word Pictures (NT)
The same are sons of Abraham (outoi uioi eisin Abraam). "These are." This is Paul's astounding doctrine to Jews that the real sons of Abraham are those who believe as he did, "they which be of faith" (oi ek pistewv), a common idiom with Paul for this idea (verse Galatians 3:9; Romans 3:26; Romans 4:16; Romans 14:23), those whose spiritual sonship springs out of (ek) faith, not out of blood. John the Baptist denounced the Pharisees and Sadducees as vipers though descendants of Abraham (Matthew 3:7; Luke 3:7) and Jesus termed the Pharisees children of the devil and not spiritual children of Abraham (not children of God) in John 8:37-44.
Other commentary entries containing this verse:
Romans 8:14
Romans 9:6
Romans 9:24
1 Corinthians 10:18
Galatians 3:16
Galatians 3:26
Galatians 4:31
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