TheWordIsOne

"I believe in one God, the Father, the Almighty, maker of heaven and earth, of all that is, seen and unseen.
I believe in one Lord, Jesus Christ, the only son of God, eternally begotten of the Father, God from God, Light from Light, true God from true God.

The four parts of the Nicene Creed are the assertions of belief in God the Father, Jesus the Son, the Holy Spirit, and the universal or eternal church. Furthermore, the creed identifies important truths to believe about the subject of each part.

the Nicene Creed
The earliest creed in Christianity, "Jesus is Lord", originated in the writings of Saint Paul. One of the most widely used Christian creeds is the Nicene Creed, first formulated in AD 325 at the First Council of Nicaea.

Nicene Creed
Romans 1:20-21 (NKJV) For since the creation of the world His invisible attributes are clearly seen, being understood by the things that are made, even His eternal power and Godhead, so that they are without excuse, because, although they knew God, they did not glorify Him as God, nor were thankful, but became futile in their thoughts, and their foolish hearts were darkened.

There is only one God one son one Spirit:
Hear, O Israel: The LORD our God is LORD.
(Deuteronomy 6:4)