2. The Old Testament shows God is at least 2 Persons. See Isaiah 44:6 - "Thus says the LORD, the King of Israel and his Redeemer, the LORD of hosts: 'I am the first and I am the last, and there is no God besides me."

The ONE God is called "the LORD," and "the LORD of hosts." The LORD is the PERSON = "the King of Israel." The LORD is the other PERSON = "his Redeemer."

There is no God other than "the LORD," who is more than ONE PERSON.

3. The Old Testament shows God is 3 Persons. See Isaiah 48:16 - "Come near to Me, listen to this: from the first I have not spoken in secret, from the time it took place, I was there. And now the Lord GOD has sent Me, and His Spirit."

Three persons here: the Lord GOD, Me, and His Spirit. If not clear in this verse, there are others and the New Testament makes the Trinity plan to see.

4. The New Testament shows that God is 3 Persons. See Matthew 3:16, 17 - "And after being baptized, Jesus went up immediately from the water; and behold, the heavens were opened, and he saw the Spirit of God descending as a dove, and coming upon Him, and behold, a voice out of the heavens, saying, 'This is My beloved Son, in whom I am well-pleased.'"

At Jesus baptism, all Three Person in the Godhead were present. Jesus was not a ventriloquist.

A "Jesus Only" group, teaches that Jesus Only is God, One God, One Person in three different roles. They base their beliefs more on experience than the Bible's teaching. This can always lead to false belief and teaching. Jesus' baptism shows this is impossible. I am one person in many roles, but God is more than one person with many roles. God is One God in Three Persons, with each Person taking different roles but each Person involved and working together in everything.