G1128–γυμνάζω–gumnazō

But refuse profane and old wives' fables. Exercise yourself toward godliness.

γύμναζε gumnaze “do train”

But solid food is for those who are full grown, who by reason of use have their senses exercised to discern good and evil.

γεγυμνασμένα gegumnasmena “trained”

All chastening seems for the present to be not joyous but grievous; yet afterward it yields the peaceful fruit of righteousness to those who have been exercised thereby.

γεγυμνασμένοις gegumnasmenois “trained”

having eyes full of adultery, and who can't cease from sin; enticing unsettled souls; having a heart trained in greed; children of cursing;

γεγυμνασμένην gegumnasmenēn “exercised”