And not holding the Head - Not holding the true doctrine respecting the Great Head of the church, the Lord Jesus Christ; Notes, Ephesians 1:22. This is regarded here as essential to the maintenance of all the other doctrines of religion. He who has just views of the Redeemer will not be in much danger of erring respecting the other points of religious belief.
From which all the body ... - This passage is almost word for word the same as in Ephesians 4:15-16. See it explained in the notes there.