signifies (a) "to be strong in body, to be robust, in sound health," Mat 9:12, Mar 2:17; (b) "to have power," as of the Gospel, Act 19:20; to prevail against, said of spiritual enemies, Rev 12:8; of an evil spirit against exorcists, Act 19:16; (c) "to be of force, to be effective, capable of producing results," Mat 5:13 ("it is good for nothing;" lit., "it availeth nothing"); Gal 5:6; in Heb 9:17 it apparently has the meaning "to be valid" (RV, "for doth it ever avail...?," for AV, "it is of no strength"). It is translated "avail" with reference to prayer, in Jam 5:16; cp. the strengthened form exischuo in Eph 3:18. See ABLE, CAN, GOOD, MAY, PREVAIL, STRENGTH, WHOLE, WORK.