Ante-Nicene Trinitarianism

"We speak of the Trinity as one God….   Not as if we made the one by a synthesis of three….   In earlier times, we have this declaration from the prophet David: ‘By the Word of the Lord were the heavens established, and all the power of them by the Spirit of His mouth’ [Psalm 33:6].   And in the beginning of the book of the creation, it is written thus: ‘And the Spirit of God moved upon the face of the waters’ [Genesis 1:2]….   ‘For the Spirit searcheth all things, yea, the depths of God!’ [First Corinthians 2:10b]….