23. (4) It is impossible for the Divine Esse and Existere in itself to produce another Divine which is Esse and Existere in itself; therefore another God of the same Essence is impossible. It has been shown already that the one God who is the Creator of the universe, is Esse and Existere in itself, that is, God in Himself; and from this it follows that God from God is impossible, because in such a being the verily essential Divine, which is Esse and Existere in itself, is impossible. It is the same whether you say "begotten of God" or "proceeding from God;" it means, in either case, produced by God, and this differs but little from being created.
Therefore, to introduce into the church a belief in three Divine persons each of whom singly is God, and of the same essence, one of them born from eternity, and a third proceeding from eternity, is to destroy utterly the idea of God's unity, and with it every idea of Divinity, and so cause all the spirituality of reason to be driven into exile. Then man is man no longer; but is so wholly natural as to differ from a beast only in the power of speech, and is opposed to all the spiritual things of the church, for these the natural man calls foolishness. This is the source and only source from which have sprung the monstrous heresies concerning God; and thus the division of the Divine trinity into persons has introduced into the church not night alone but death as well.  That the identity of three Divine Essences is an offense to reason was made evident to me by angels, who said that they could not even utter the words "three equal divinities" and that if anyone should come into their presence wishing to utter these words he could not but turn himself away; and after uttering them he would become like the trunk of a man, and would be hurled downward; and would afterwards betake himself to those in hell who do not acknowledge any God. The truth is that to implant in the mind of a child or youth the idea of three Divine persons, to which inevitably the idea of three Gods clings, is to deprive it of all spiritual milk, and then of all spiritual food, and finally of all ability to reason spiritually, and to bring spiritual death upon those who confirm themselves in that idea. The difference between those who in faith and heart worship one God as the Creator of the universe, and those who worship Him as both the Redeemer and the Regenerator, is like the difference between the city of Zion in the time of David and the city of Jerusalem in the time of Solomon after the temple had been built; while a church that believes in three persons and in each as a distinct God, is like the city of Zion and Jerusalem after it had been overthrown by Vespasian and the temple burned. Furthermore, the man who worships one God in whom is a Divine trinity, and who is thus one Person, becomes more and more a living and angelic man; while he who confirms himself in a belief in a plurality of Gods from believing in a plurality of persons, gradually becomes like a statue with movable joints, within which Satan stands and speaks through its artificial mouth.