'Teaching' in the Bible

Whom we preach, warning every man, and teaching every man in all wisdom; that we may present every man perfect in Christ Jesus:

Rooted and based together in him, strong in the faith which the teaching gave you, giving praise to God at all times.

See that there be no one who shall lead you away as a prey through philosophy and vain deceit, according to the teaching of men, according to the elements of the world, and not according to Christ.

(Rules which are all to come to an end with their use) after the orders and teaching of men?

Let the word of Christ dwell in you richly in all wisdom; teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord.