1500 - eiké

Strong's Concordance

Original word: εἰκῆ
Transliteration: eiké
Definition (short): vain
Definition (full): without cause or reason, vainly

NAS Exhaustive Concordance

Word Origin: adverb probably akin to hekón
Definition: without cause or reason, vainly
NASB Translation: nothing (1), vain (4), without cause (1).
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Strong's Exhaustive Concordance

Probably from eiko (through the idea of failure); idly, i.e. Without reason (or effect) -- without a cause, (in) vain(-ly).

see GREEK eiko

References

Strong's 1500: 6 Occurrences
KJV: For he is the minister of God to thee for good. But if thou do that which is evil, be afraid; for he beareth not the sword in vain: for he is the minister of God, a revenger to execute wrath upon him that doeth evil.
NASB: for it is a minister of God to you for good. But if you do what is evil, be afraid; for it does not bear the sword for nothing; for it is a minister of God, an avenger who brings wrath on the one who practices evil.
KJV: By which also ye are saved, if ye keep in memory what I preached unto you, unless ye have believed in vain.
NASB: by which also you are saved, if you hold fast the word which I preached to you, unless you believed in vain.
KJV: Have ye suffered so many things in vain? if it be yet in vain.
NASB: Did you suffer so many things in vain-- if indeed it was in vain?
KJV: I am afraid of you, lest I have bestowed upon you labour in vain.
NASB: I fear for you, that perhaps I have labored over you in vain.