Irenaeus of Lyons was an early Church Father who lived in the second century. He wrote an early creed or "rule of faith" that is more ancient than the more commonly known Nicene Creed. I found it beautiful and wanted to share it here:
"This then is the order of the rule of our faith…: God, the Father, not made, not material, invisible; one God, the creator of all things: this is the first point of our faith.
"The second point is: The Word of God, Son of God, Christ Jesus our Lord, who was manifested to the prophets according to the form of their prophesying and according to the method of the dispensation of the Father through whom all things were made; who also at the end of the times, to complete and gather up all things, was made man among men, visible and tangible, in order to abolish death and show forth life and produce a community of union between God and man.
"And the third point is: The Holy Spirit, through whom the prophets prophesied, and the fathers learned the things of God, and the righteous were led forth into the way of righteousness; and who in the end of the times was poured out in a new way a upon mankind in all the earth, renewing man unto God."