There is only one God. There is no trinity of God. Both Israelitic and Christian narrative concurs:
Deuteronomy 6:4 LITV
(4) Hear, O Israel, Jehovah our God is one Jehovah.
Mark 12:28-29 LITV
(28) And coming up, one of the scribes, hearing them arguing, knowing that He answered them well, he questioned Him, What is the first commandment of all?
(29) And Jesus answered him, The first of all the commandments is: "Hear, Israel. The Lord our God is one Lord,
YHWH MESSIAH YESHUA (The LORD Christ Jesus, word for word) has united the chosen people with the Israelites into one Faith, according to Micah 4:2. Thus, we read the theme of oneness under Jesus in the New Testament. What creed would the Gentiles hold to when they accept the Gospel of Jesus? It is the creed of Judaism as it was established before the advent of Jesus in Moses and Isaiah. Jesus upheld that precedence for the Gentiles in Matthew 5 where He declared that Moses is the only everlasting reference for all believers in the God of the Israelites.