'Trained' in the Bible

A pupil is not above his teacher; but everyone, after he has been fully trained, will be like his teacher.

But solid food is for the mature, who because of practice have their senses trained to discern good and evil.

All discipline for the moment seems not to be joyful, but sorrowful; yet to those who have been trained by it, afterwards it yields the peaceful fruit of righteousness.

having eyes full of adultery that never cease from sin, enticing unstable souls, having a heart trained in greed, accursed children;