The problem is in other places where Christ and the Church are one, and that when a couple is married they are one in Christ. The whole idea is flawed and did not come into acceptance until the third century.
Christ says that if you have seen him you have seen the Father. They are one just like a husband and wife are one. They are unified, one in purpose. They are three distinct individuals. Together they make up the Godhead. The board of directors of a corporation are not one but they act as one. So it is with the Father, Son and Holy Ghost.
30. Are the three Divine Persons really distinct from one another?
The three Divine Persons are really distinct from one another.
And the Holy Ghost descended in a bodily shape, as a dove, upon him. And a voice came from heaven: “Thou art my beloved Son. In thee I am well pleased.” (Luke 3:22)