Before you go calling me a 'trinitarian' and show that you do not understand my position, see what I do NOT believe.Hmmm!
So, do I accept the error of Romanism, in it's "una substantia", "perfectly one superabound" doctrine of it's "trinity", or that the Person/Being of the Father is formless, or that the Father "eternally begets" the Son, or that the Holy Ghost is the eternal spiration of the Father and the Son? No, I do not.
Do I also confess as they, "We do not confess three Gods, but one God in three persons, the "consubstantial Trinity"." No, I do not.
Roman Catholicism's trinitarianism error ** [I do not believe in the following definition as they give about their Singularity “God”]
“... 237 The Trinity is a mystery of faith in the strict sense, one of the "mysteries that are hidden in God, which can never be known unless they are revealed by God".58 To be sure, God has left traces of his Trinitarian being in his work of creation and in his Revelation throughout the Old Testament. But his inmost Being as Holy Trinity is a mystery that is inaccessible to reason alone or even to Israel's faith before the Incarnation of God's Son and the sending of the Holy Spirit. ...
... 253 The Trinity is One. We do not confess three Gods, but one God in three persons, the "consubstantial Trinity".83 The divine persons do not share the one divinity among themselves but each of them is God whole and entire: "The Father is that which the Son is, the Son that which the Father is, the Father and the Son that which the Holy Spirit is, i.e. by nature one God."84 In the words of the Fourth Lateran Council (1215), "Each of the persons is that supreme reality, viz., the divine substance, essence or nature."85 ...
... 261 The mystery of the Most Holy Trinity is the central mystery of the Christian faith and of Christian life. God alone can make it known to us by revealing himself as Father, Son and Holy Spirit.
262 The Incarnation of God's Son reveals that God is the eternal Father and that the Son is con-substantial with the Father, which means that, in the Father and with the Father the Son is one and the same God.
263 The mission of the Holy Spirit, sent by the Father in the name of the Son (Jn 14:26) and by the Son "from the Father" (⇒Jn 15:26), reveals that, with them, the Spirit is one and the same God. "With the Father and the Son he is worshipped and glorified" (Nicene Creed).
264 "The Holy Spirit proceeds from the Father as the first principle and, by the eternal gift of this to the Son, from the communion of both the Father and the Son" (St. Augustine, De Trin. 15, 26, 47: PL 42, 1095).
266 "Now this is the Catholic faith: We worship one God in the Trinity and the Trinity in unity, without either confusing the persons or dividing the substance; for the person of the Father is one, the Son's is another, the Holy Spirit's another; but the Godhead of the Father, Son and Holy Spirit is one, their glory equal, their majesty coeternal" (Athanasian Creed: DS 75; ND 16).
267 Inseparable in what they are, the divine persons are also inseparable in what they do. But within the single divine operation each shows forth what is proper to him in the Trinity, especially in the divine missions of the Son's Incarnation and the gift of the Holy Spirit.” – Catechism of the Catholic Church - Catechism of the Catholic Church - The Father
Another:
“We believe then in the Father who eternally begets the Son, in the Son, the Word of God, who is eternally begotten; in the Holy Spirit, the uncreated Person who proceeds from the Father and the Son as their eternal love. Thus in the Three Divine Persons, coaeternae sibi et coaequales,[8] the life and beatitude of God perfectly one superabound and are consummated in the supreme excellence and glory proper to uncreated being, and always "there should be venerated unity in the Trinity and Trinity in the unity."[9]” [Online Roman Catholic Library; Credo of the People of God; Promulgated by Pope Paul VI on June 30, 1968] - CATHOLIC LIBRARY: The Credo of the People of God (1968)
Another:
“...that the Paraclete "is not to be considered as unconnected with the Father and the Son, for He is with Them one in substance and divinity"...
... Proceeding both from the Father and the Son, the Holy Ghost, nevertheless, proceeds from Them as from a single principle. ... Hence it follows, indeed, that the Holy Ghost proceeds from the two other Persons, not in so far as They are distinct, but inasmuch as Their Divine perfection is numerically one. Besides, such is the explicit teaching of ecclesiastical tradition, which is concisely put by St. Augustine (On the Holy Trinity V.14): "As the Father and the Son are only one God and, relatively to the creature, only one Creator and one Lord, so, relatively to the Holy Ghost, They are only one principle." This doctrine was defined in the following words by the Second Ecumenical Council of Lyons [Denzinger, "Enchiridion" (1908), n. 460]: "We confess that the Holy Ghost proceeds eternally from the Father and the Son, not as from two principles, but as from one principle, not by two spirations, but by one single spiration." The teaching was again laid down by the Council of Florence (ibid., n. 691), and by Eugene IV in his Bull "Cantate Domino" (ibid., n. 703 sq.). ...
..."the Holy Ghost comes from the Father and from the Son not made, not created, not generated, but proceeding" ... “ [Online Roman Catholic Encyclopedia, Holy Spirit; sections throughout] - CATHOLIC ENCYCLOPEDIA: Holy Ghost
Another:
"The sacrosanct Roman Church, founded by the voice of our Lord and Savior, firmly believes, professes, and preaches one true God omnipotent, unchangeable, and eternal, Father, Son, and Holy Ghost; one in essence, three in persons; Father unborn, Son born of the Father, Holy Spirit proceeding from Father and Son; that the Father is not Son or Holy Spirit, that Son is not Father or Holy Spirit; that Holy Spirit is not Father or Son; but Father alone is Father, Son alone is Son, Holy Spirit alone is Holy Spirit. The Father alone begot the Son of His own substance; the Son alone was begotten of the Father alone; the Holy Spirit alone proceeds at the same time from the Father and Son.
These three persons are one God, and not three gods, because the three have one substance, one essence, one nature, one divinity, one immensity, one eternity, where no opposition of relationship interferes.
“Because of this unity the Father is entire in the Son, entire in the Holy Spirit; the Son is entire in the Father, entire in the Holy Spirit, the Holy Spirit is entire in the Father, entire in the Son. No one either excels another in eternity, or exceeds in magnitude, or is superior in power. For the fact that the Son is of the Father is eternal and without beginning; and that the Holy Spirit proceeds from the Father and the Son is eternal and without beginning.” Whatever the Father is or has, He does not have from another, but from Himself; and He is the principle without principle. Whatever the Son is or has, He has from the Father, and is the principle from a principle. Whatever the Holy Spirit is or has, He has simultaneously from the Father and the Son. But the Father and the Son are not two principles of the Holy Spirit, but one principle, just as the Father and the Son and the Holy Spirit are not three principles of the creature, but one principle. ..." The Council of Florence (A.D. 1438-1445) From Cantate Domino — Papal Bull of Pope Eugene IV by Pope Eugene IV - The Council of Florence (A.D. 1438-1445) From Cantate Domino — Papal Bull of Pope Eugene IV - Catholicism.org
So you understand what I do NOT believe?