For the beginning is faith, and the end is love. Now these tow, being inseparably connected together, are of God, while all other things which are requisite for a holy life follow after them. No man [truly] making a profession of faith sinneth; nor does he that possesses live hate any one. the tree is made manifest by its fruit; so those that profess themselves to be Christians shall be recognsed by their conduct.
-Ignatius of Antioch, Epistle to the Ephesians, Chapter XIV, Ante-Nicene Fathers Volume I, Kindle Location 3365