The Holy Trinity is often misinterpreted or misunderstood. There are those who say that it is polytheism with three gods or that it is God in three different forms. All of these are wrong and the opposite of common logic and Christian monotheism.
“The Father loves not only the Son but also himself and us, by the Holy Spirit.”
St. Thomas Aquinas
God the Father is the Eternal Cause from which all things seen and unseen come from. God the Son is the Effect. God the Holy Spirit is the Motive. Effect without Motive is Absurd. Cause without Effect is pointless. God is the Eternal co-existent Cause, Effect, and Motive.