Trinity
The first recorded use of this Greek word in Christian theology was by Theophilus of Antioch in about 170. He did not speak about the Trinity of God. He wrote: "In like manner also the three days which were before the luminaries, are types of the Trinity [], of God, and His Word, and His wisdom. And the fourth is the type of man, who needs light, that so there may be God, the Word, wisdom, man."