From G2904; to use {strength} that {is} seize or retain (literally or figuratively): - hold ({by} {fast}) {keep} lay hand (hold) {on} {obtain} {retain} take (by).
Perhaps a primary word; vigor {[great]} (literally or figuratively): - {dominion} might {[-ily]} {power} strength.
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Matrix
Luk 1:3It seemed good to me also, having had perfect understanding of all things from the very first, to write unto thee in order, most excellentG2903 Theophilus,