Didymus the Blind

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(Didym. de Spir. Sanct. ut sup.) To receive must be taken here in a sense agreeable to the Divine Nature. As the Son in giving is not deprived of what He gives, nor imparts to others with any loss of His own, so too the Holy Ghost does not receive what before He had not; for if He received what before He had not, the gift being transferred to another, the giver would be thereby a loser. We must understand then that the Holy Ghost receives from the Son that which belonged to His nature, and that there are not two substances implied, one giving, and the other receiving, but one substance only. In like manner the Son too is said to receive from the Father that wherein He Himself Subsists. For neither is the Son any thing but what is given Him by the Father, nor the Holy Ghost any substance but that which is given Him by the Son.