The Athanasian Creed sets forth the Christian doctrine of the Trinity (three in unity), rejecting both polytheism (belief in more than one god) and modalism (the belief that the one God merely changes modes of expression). Polytheism is evident today in Mormonism, and modalism lives on in the United Pentecostal Church (Jesus only).
Samples, Kenneth Richard. ‘Without a Doubt: Answering the 20 Toughest Faith Questions. p. 55
And not just your prayers, but everything you do and say - do it “in Jesus’ name”. But before you do or say anything think - would Jesus do this? Do those things Jesus would do and only the things He would do, don’t do what He wouldn’t. Likewise with the things you say. Imitate Christ. Conform yourself to His image.
It is not three different gods (tritheism), for that would divide the essence. Rather it is only one God (monotheism). And it is not one single solitary person (Monarchianism, modalism), for that would blend or confound the persons.
~ Samples, Kenneth Richard. ‘Without a Doubt: Answering the 20 Toughest Faith Questions. p. 65