We cannot escape the fact that the Scriptures say there is one God and that one and only God is Jesus Christ's God. His God was not a Trinity. Jesus was commanded to worship the God of Israel, "Hear O ISRAEL, the Lord OUR God is one." The Shema command refers to "OUR" God where "OUR" refers to the people of Israel. He was required to worship OUR God and since he only worshiped the Father alone, Jesus proved to us that "OUR" God, Israel's God, is the Father alone. He didn't worship a three-person-God proving that Israel's God was not a three-person-being. Jesus is our most trustworthy witness and your Bible tells you he came to reveal the true God to us. He revealed his God - the Father alone. Our Lord Jesus shows us the Shema means "our God" is one single HE who we are to serve with all our heart - his God and Father. Mark 12:32; Deut 4:35. Jesus also shows us how to identify that one single HE - his Father alone - "there is NO OTHER but HE." Jesus identified that HE as the Father alone. He has made us to be... priests TO HIS God and Father. Rev 1:6. Even further, this command was for every Israelite including Jesus, a Jew born under the Law. It says, "the Lord OUR God." Jesus was required to recognize and serve ISRAEL'S God. He did this by recognizing and serving only one person, the Father, as "OUR" God, that is, ISRAEL'S God. Israel's God = Jesus' God. "OUR God" for Jesus meant one person only. This proves beyond any doubt that the God of Israel was only one person. Otherwise, Jesus did not obey the Shema commandment.
These Scriptural facts compel us to the conclusion that the only true God is Jesus Christ's God, the Father alone, and he alone is the God of the Shema, the God of Israel. But truth requires people to be reasonable with the facts. It has been my own observation that a very significant portion of the "Christian" population refuses to be reasonable when they do not like the facts. It is both astonishing and disturbing to observe this behavior but it is a real and an unfortunate reality.