'Exercised' in the Bible

The people of the land have used oppression, and exercised robbery; yes, they have troubled the poor and needy, and have oppressed the foreigner wrongfully.

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

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.