[καταβραβεύω] from G2596 and G1018 (in its original sense); to award the price against, i.e. (figuratively) to defraud (of salvation)
Usages throughout the bible
Colossians 2:18
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Let G2603 no man beguile G2603 you of your reward G2603 in a voluntary humility and worshipping of angels, intruding into those things which he hath not seen, vainly puffed up by his fleshly mind,