Commentaries:
Robertson's Word Pictures (NT)
That will harm you (o kakwswn umav). Future active articular participle of kakow, old verb (from kakov, bad) as in Acts 7:6, Acts 7:19. Any real hurt, either that wishes to harm you or that can harm. See the words in Isaiah 50:9.
If ye be (ean genhsqe). Rather, "if ye become" (condition of third class with ean and second aorist middle subjunctive of ginomai).
Zealous of that which is good (tou agaqou zhlwtai). "Zealots for the good" (objective genitive after zhlwtai (zealots, not zealous), old word from zhlow (I Corinthians 12:12).
Other Robertson's Word Pictures (NT) entries containing 1 Peter 3:13:
1 Peter 3:14
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