G1128 — gumnazo
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
gumnazo — pronounced goom-nad'-zo
from 1131; to practise naked (in the games), i.e. train (figuratively):--exercise. see GREEK for 1131
4 occurrences in the KJV.
1 Timothy 4:7
But refuse profane and old wives’ fables, and exercise thyself rather unto godliness.
Hebrews 5:14
But strong meat belongeth to them that are of full age, even those who by reason of use have their senses exercised to discern both good and evil.
Hebrews 12:11
Now no chastening for the present seemeth to be joyous, but grievous: nevertheless afterward it yieldeth the peaceable fruit of righteousness unto them which are exercised thereby.
2 Peter 2:14
Having eyes full of adultery, and that cannot cease from sin; beguiling unstable souls: an heart they have exercised with covetous practices; cursed children: