Commentaries:
Robertson's Word Pictures (NT)
So speak ye, and so do (outwv laleite kai outwv poieite). Present active imperatives as a habit. For the combination see James 1:19-21 contrasted with James 1:22-25, and James 1:26 with James 1:27.
By a law of liberty (dia nomou eleuqeriav). The law pictured in James 1:25, but law, after all, not individual caprice of "personal liberty." See Romans 2:12 for this same use of dia with krinw in the sense of accompaniment as in Romans 2:27; Romans 4:11; Romans 14:20. "Under the law of liberty."
Other Robertson's Word Pictures (NT) entries containing James 2:12:
James 1:25
James 5:9
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