I find the Trinity unrealistic to be honest. It aint mentioned anywhere in the bible btw. :-\
Does something have to be mentioned by name in the Bible to be realistic? Think of all the very real things that are not mentioned in any religion's set of scriptures. What scriptures mention atoms, photons, quasars? What scriptures mentions environmental warming? What scriptures mentions the countries of Saudia Arabia, Maylaysia, Great Britian, or the United States? What scriptures mention cars, television, airplanes, or the internet? Yet all of these things are real. We have observed all of these things and by observation we know them to be real. And having observed them we then have created names to identify what it is that we have observed.
The same thing is true with regard to the Trinity. It is just a name. Christains observed that God was known to them as Father. This is clear because Jesus himself taught his disciples to address God as "our Father". Of course, Jesus as not the first to call God "Father", it was a common way of speaking of God during the rabbinic period of Judaism in which Jesus lived.
Then they observed that God was known to them as a Spirit who was present in their lives. This is the Holy Spirit that Jesus promised to send his followers. And this concept of God as Spirit was not foreign to monotheistic Jews either, for there are references to the Spirit of God all the way back to the writings of Moses and especially in the Psalms of David and even more in the later prophets.
And then this Spirit of God revealed to them that Jesus also was God, only incarnate among them. That did require a shift in one's understanding of God, but it was not so strong a shift as to imagine that there was more than one God. There was still just one God, but God was known to them in three distinct persons. They had no name for it, yet is was something that they really observed. And today we can still observe this very truth to be present and revealed to us in the pages of the Bible.
No, the word Trinity is not to be found in the Bible. But what is found in the Bible is that God has made himself known to us in these three persons. Having both observed and experienced it in their own lives the disciples never did give a name to it, but they testified repeatedly to the truth of it. It would be a later generation that would suggest a name to describe the totality of this experience in a single word "
trinitas" which we translate into the word "Trinity".
So, we don't need to find the word in the Bible for it to be true. It is merely a name identified something that we already know to be true, no matter what name one uses to describe it.
BTW, those that seek to explain the concepts identified in the term Trinity with analogies, be those with references to water, an egg, or something else are not trying to say that there are 100% parallels. They are analogies and nothing more. They teach about one (or perhaps a few) aspects of the Trinity, but they in no wise reveal all of its truth. They will break down for the very simple (and hopefully obvious) reason that they are finite illustrations of an infinite being. There is no way that they can speak all of the truth regarding God. Nor are they intended to. If one tries to make the illustration explain some aspect of God different than what it is intended to explain, the fact that the illustration fails to do so, does not reflect on the truth of God's character at all, on that any one illustration can only go so far in attempting to explain the nature of God who by his very nature of being God is beyond the comprehension of humankind.