Yes. I believe in the Trinity of God the Father, God the Son and God the Holy Spirit.
‘Believing that a creation becoming flesh is not a big deal but believing that God (Lord Jesus Christ) became Flesh is what is referred to in 1 John 4:2 – 3, John 1:1, 14, 1 Timothy 3:16’ – Anonymous
More Details, please consider:
I see that the One God manifests Himself in three Persons (seems impossible to us but He can do all things):
God the Father as the Invisible God.
God the Holy Spirit as His Manifestation in the Spirit.
God the Son as His Visible Manifestation in the Flesh.
That’s why we are baptised in all three names, in the Name of the “Father, Son and Holy Spirit” as the “One God”.
The Details are difficult to prove from Scripture and may be hidden to be revealed one day.
Here are some posts regarding some details or reasons as to why God Chose To Manifest Himself in this Way:
The Trinity is Difficult to be explained but I see that the closest to what I believe is “The One God is in Three Persons”.
Please take note that Christian Universalists such as Clement of Alexandria, Origen, to even St. Gregory of Nyssa and more recently Sadhu Sundar Singh & Professor Thomas Talbott are all “Trinitarians” as I understand it.
The details beyond that as to how God is in Three Persons do not bother me as the Bible doesn’t explain the “how” part and so I am open to any “trinitarian explanation or view regarding it” without having to subscribe to it.
The Fact that this “how” part is not revealed explicitly in the Bible proves that perhaps we are not required to understand those details now on earth itself but we will surely understand it when we meet Him after we die.
So, since no Scripture literally describes the “how-part in all aspects”, I keep from explaining further beyond what I tried to explain or speculate (if any) with “Verses” in each of the posts above.