From a compound of G4253 and G3708; to be a watcher in {advance} that {is} to mount guard as a sentinel (post spies at gates); figuratively to hem {in}protect: - keep (with a garrison). Compare G5083.
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Tit 3:8This is a faithful saying, and these things I will that thou affirm constantly, that they which have believed in God might be carefulG5431 to maintain good works. These things are good and profitable unto men.