G1128–γυμνάζω–gumnazō

But profane and old wives' fables avoid, but exercise thyself unto piety;

γύμναζε gumnaze “do train”

but solid food belongs to full-grown men, who, on account of habit, have their senses exercised for distinguishing both good and evil.

γεγυμνασμένα gegumnasmena “trained”

But no chastening at the time seems to be [ergänzt: matter] of joy, but of grief; but afterwards yields [ergänzt: the] peaceful fruit of righteousness to those exercised by it.

γεγυμνασμένοις gegumnasmenois “trained”

having eyes full of adultery, and that cease not from sin, alluring unestablished souls; having a heart practised in covetousness, children of curse;

γεγυμνασμένην gegumnasmenēn “exercised”