Commentaries:
Jamieson, Fausset, and Brown
what—literally, "of what nature" is your life? that is, how evanescent it is.
It is even—Some oldest authorities read, "For ye are." BENGEL, with other old authorities, reads, "For it shall be," the future referring to the "morrow" (James 4:13-15). The former expresses, "Ye yourselves are transitory"; so everything of yours, even your life, must partake of the same transitoriness. Received text has no old authority.
and then vanisheth away—"afterwards vanishing as it came"; literally, "afterwards (as it appeared), so vanishing" [ALFORD].
Other Jamieson, Fausset, and Brown entries containing James 4:14:
Psalms 78:39
Proverbs 27:1
Jeremiah 10:23
1 Corinthians 7:31
1 Timothy 6:19
James 4:14
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