2 For my own part, it was not only the claim which my vocation has upon me, the duty of diligently preaching the Gospel which, as a bishop, I owe to the Church, that has led me on. My eagerness to write has increased with the increasing numbers endangered and enthralled by this heretical theory. There was a rich prospect of joy in the thought of multitudes who might be saved, if they could know the mysteries of the right faith in God, and abandon the blasphemous principles of human folly, desert the heretics and surrender themselves to God; if they would forsake the bait with which the fowler snares his prey, and soar aloft in freedom and safety, following Christ as Leader, prophets as instructors, apostles as guides, and accepting the perfect faith and sure salvation in the confession of Father and of Son. So would they, in obedience to the words of the Lord, He that honours not the Son honours not the Father which has sent Him, be setting themselves to honour the Father, through honour paid to the Son.
Source: On the Trinity (New Advent)