Orthodox Monotheists believe in One God, the Father.
John 17:3 And this is life in the age to come, that they know you, the only true God, and Jesus Christ whom you have sent.
1 Cor 8:5-6 For even if there are so-called gods, whether in heaven or on earth (as indeed there are many gods and many lords), (6) yet for us there is One God, the Father, from whom are all things, and we are for … Read the rest