This past Sunday, we celebrated the Solemnity of the Most Holy Trinity. We consider the incomprehensible Unity in Trinity and Trinity in Unity – three Persons in one God and one God in three Persons. Each wholly and entirely God, and yet not three Gods, but one God, one divine nature, one divine essence.
Reflecting upon the unity of the three divine Persons, we will quickly see that there is no obedience within the Trinity. The Son is not obedient to the Father, neither is the Holy Spirit obedient to the Father and the Son, but these three are bound in a perfect mutual enjoyment and love – “And the more love is one, the more it is love.” (St John of the Cross, Romances on “In the Beginning was the Word”)
St. Gregory of Nazianzus has proposed this dogma for our belief: “Above all guard for me this great deposit of faith for which I live and fight, which I want to take with me as a companion, and which makes me bear all evils and despise all pleasures: I mean the profession of faith in the Father and the Son and the Holy Spirit. I entrust it to you today. By it I am soon going to plunge you into water and raise you up from it. I give it to you as the companion and patron of your whole life. I give you but one divinity and power, existing one in three, and containing the three in a distinct way. Divinity without disparity of substance or nature, without superior degree that raises up or inferior degree that casts down. . . the infinite co-naturality of three infinites. Each person considered in himself is entirely God. . . the three considered together. . . I have not even begun to think of unity when the Trinity bathes me in its splendour. I have not even begun to think of the Trinity when unity grasps me. . .” (Oratio 40,41; CCC 256)