'Trained' in the Bible

He said to them, “Therefore every scribe who has become a disciple of the kingdom of heaven is like the head of a household, who brings out of his treasure things that are new and fresh and things that are old and familiar.”

A student is not superior to his teacher; but everyone, after he has been completely trained, will be like his teacher.

namely, a man of unquestionable integrity, the husband of one wife, having children who believe, not accused of being immoral or rebellious.

It teaches us to reject ungodliness and worldly (immoral) desires, and to live sensible, upright, and godly lives [lives with a purpose that reflect spiritual maturity] in this present age,

But solid food is for the [spiritually] mature, whose senses are trained by practice to distinguish between what is morally good and what is evil.

For the time being no discipline brings joy, but seems sad and painful; yet to those who have been trained by it, afterwards it yields the peaceful fruit of righteousness [right standing with God and a lifestyle and attitude that seeks conformity to God’s will and purpose].

They have eyes full of adultery, constantly looking for sin, enticing and luring away unstable souls. Having hearts trained in greed, [they are] children of a curse.