Arianism, in Christianity, is a Christological concept that asserts that Jesus Christ is the Son of God who was created by God the Father at a point in time, is distinct from the Father and is therefore subordinate to the Father.
Arian, a vindication of Christian doctrine, is full of the knowledge of our religion and of the truth of things related to the doctrine of Christ. For as the light is noble, and the sun, the chief cause of light, is nobler still, so, as it is a divine thing for the whole world to be filled with his knowledge, it follows that the orderer and chief cause of such an achievement is God and the Word of God. We speak then as lies within our power, first refuting the ignorance of the unbelieving; so that what is false being refuted, the truth may then shine forth of itself, and that you yourself, friend, may be reassured that you have believed what is true, and in coming to know Christ have not been deceived.