Augustine of Hippo

(xxi. s. 13) First indeed, the Son appeared as a servant, and the Father was honoured as God. But the Son will be seen to be equal to the Father, that all men may honour the Son, even as they honour the Father. 1But what if persons are found, who honour the Father, and do not honour the Son? It cannot be: He that honoureth not the Son, honoureth not the Father which hath sent Him. It is one thing to acknowledge God, as God; and another to acknowledge Him as the Father. When thou acknowledgest God the Creator, thou acknowledgest an almighty, supreme, eternal, invisible, immutable Spirit. When thou acknowledgest the Father, thou dost in reality acknowledge the Son; for He could not be the Father, had He not the Son. But if thou honour the Father as greater, the Son as less, so far as thou givest less honour to the Son, thou takest away from the honour of the Father. For thou in reality thinkest that the Father could not or would not beget the Son equal to Himself; which if He would not do, He was envious, if He could not, He was weak. (Tr. xxiii. s. 13). Or, That all men should honour the Son even as they honour the Father; has a reference to the resurrection of souls, which is the work of the Son, as well as of the Father. But the resurrection of the body is meant in what comes after: He that honoureth not the Son, honoureth not the Father that sent Him. Here is no as; the man Christ is honoured, but not as the Father Who sent Him, since with respect to His manhood He Himself saith, My Father is greater than I. (Tr. xxi. s. 17). But some one will say, if the Son is sent by the Father, He is inferior to the Father. Leave thy fleshly actions, and understand a mission, not a separation. Human things deceive, divine things make clear; although even human things give testimony against thee, e. g. if a man offers marriage to a woman, and cannot obtain her by himself, he sends a friend, greater than himself, to urge his suit for him. But see the difference in human things. A man does not go with him whom he sends; but the Father Who sent the Son, never ceased to be with the Son; as we read, I am not alone, but the Father is with Me. (c. 16)