'Exercised' in the Bible

But solid food is for fullgrown men, even those who by reason of use have their senses exercised to discern good and evil.

All chastening seemeth for the present to be not joyous but grievous; yet afterward it yieldeth peaceable fruit unto them that have been exercised thereby, even the fruit of righteousness.

having eyes full of adultery, and that cannot cease from sin; enticing unstedfast souls; having a heart exercised in covetousness; children of cursing;