ἰσχύς, -ύος, ἡ,
[in LXX chiefly for כֹּחַ, also for חַיִל, עֹז, גְּבוּרָה, etc.;]
strength, might, power, force, ability: Re 5:127:12; ἰ. κ. δύναμις, II Pe 2:11; τ. κράτος τῆς ἰ. (Is 40:26), Eph 1:196:10; ἡ δόξα τῆς ἰ., II Th 1:9; ἐξ ἰ., I Pe 4:11; ἐν ὅλῃ τ. ἰ., Mk 12:30, 33(LXX), Lk 10:27(LXX).†
SYN.: δύναμις (q.v., and cf. ICC, Phl 4:13); κράτος (cf. M, Th., I, 1:9).