Trinity Or Unity? Creation Provides Answers

Water is a decent visual and mental example of 'what' and 'how' God is.
The blue sky is replete with water vapor (gas), the human body containing
mostly water (liquid), and elsewhere water becomes a solid (ice), at times
as hard as man's heart when it comes to things from Above.

Describing Father, Son, Holy Spirit as the Eternal Reality is somewhat possible when speaking of water's three physical states in earthly terms.

God is Spirit, revealed as Father, Son, Spirit, similar to how H2O is water, expressed as solid, liquid, gas.

The physical references are not perfect nor absolute, but water's example provides a glimpse and means of understanding.

God provides answers and rudiments towards understanding through His creation.

Memes like the one below, although likely intended to do good and promote a particular doctrine aimed at clarifying Scripture, are often divisive and limited in being clear about God's message (the Gospel).

The term "not" should be stricken: not.
This article explains how and why.

I don't think visual models can clearly define 'what' and 'how' or 'who' God is.

Consider the following:

If you really know Me, you will know My Father as well. From now on, you do know Him and have seen Him.” 

Philip said, “Lord, show us the Father and that will be enough for us.” 

Yeshua answered: “Don’t you know Me, Philip, even after I have been among you such a long time? Anyone who has seen Me has seen the Father. How can you say, ‘Show us the Father’? Don’t you believe that I Am in the Father, and that the Father is in Me? The words I say to you I do not speak on My own authority. Rather, it is the Father, living in Me, who is doing His work. Believe Me when I say that I Am in the Father and the Father is in Me; or at least believe on the evidence of the works themselves. 

- John 14: 7-11

What Scripture better depicts.

Notice Yeshua claims to be the Father visibly seen to human eyes.

This is why it is later written Yeshua is “the image of the invisible God” (Colossians 1: 15).

To mention the Holy Spirit:

If you love Me, keep My commands. And I will ask the Father, and He will give you another Advocate to help you and be with you forever— the Spirit of Truth. The world cannot accept Him, because it neither sees Him nor knows Him. But you know Him, for He lives with you and will be in you. I will not leave you as orphans; I will come to you. Before long, the world will not see Me anymore, but you will see Me. Because I live, you also will live. On that day you will realize that I Am in My Father, and you are in Me, and I Am in you. 

- John 14: 15-20

Notice it says “another Advocate”, which means there is an Advocate currently present when this testimony is spoken.

Who is the first Advocate?

Yeshua. (the design of Messiah is a Savior, one who defends or advocates on behalf / in place of another).

Notice the Spirit of Truth is described as presently living “with you” and will later be “in you”.

This is again speaks to the current Advocate (Yeshua) and also calls this first Advocate the Spirit of Truth. (think of the many different names and titles and attributes about God, all talking about the same One God in a variety of ways)

Notice then Yeshua promises to “return” to them, not leaving them as orphans.

How did Yeshua 'return'?

As the Holy Spirit.

How is this affirmed?

It says the world will not (and does not) 'see' the Spirit of Truth, but the disciples will see the Spirit of Truth because, as Yeshua lived even after death, so also will the disciples live because Yeshua / the Spirit of Truth will live in them.

Notice how it describes Yeshua being “in” the Father, the disciples “in” Yeshua, and Yeshua “in” the believers.

How?

The Holy Spirit to be poured out as described in Acts 1 will be “in” the disciples.

This passage in John 14 explains the mystery of what is messaged when expressing “the Father, the Son, the Holy Spirit”.

God is always testified as One (unity) and never as a disunity.

God and His various attributes, in this case as the firstborn of something visible / metaphysical (“the Son”), and as Spirit (God is Spirit), concludes since God is Holy, thus His Spirit is Holy.

Notice in Genesis 1: 1-3 God and His attributes are also described in this manner, as “God”, then when “God said” (Word), and then the “Spirit of God ”.

So logically speaking and according to Scripture, the meme is sadly incorrect when it mentioning “not”.

It thus represents a limited understanding.

It is actually leaning towards a contentious heresy based on man's logic rather than Scripture's fulness, a contention that arose although men may have intended to gain more clarity into this mystery.

That ancient argument was a cause for division in the early Church, a division that eventually led to infighting and bloodshed.

Instead of the teaching not to argue over words, but keep the bond of peace among the believers:

Be completely humble and gentle; be patient, bearing with one another in love. Make every effort to keep the unity of the Spirit through the bond of peace. There is One body and One Spirit, just as you were called to one hope when you were called; One Lord, one faith, one baptism; One God and Father of all, who is over all and through all and in all. 

- Ephesians 4: 2-5

Notice these 'ones' are not added together, but rather realized “in” unity; as One when it says God is “over all and through all and in all.”

The logical manners of some men beholden to the ideas of certain religious people cannot embrace God's mystery... but perhaps some hearts are allowed to understand His mysteries.

How has this mystery been testified to and affirmed?

By God (Creator) and His works (creation):

This is the One who came by water and blood—Yeshua Christ. He did not come by water only, but by water and blood. And it is the Spirit who testifies, because the Spirit is the Truth. For there are three that testify: the Spirit, the water and the blood; and the three are in agreement. We accept human testimony, but God’s testimony is greater because it is the testimony of God, which He has given about His Son. 

- 1 John 5: 6-9

Recall that God is Spirit, thus the reference to God's testimony is noted as “the Spirit who testifies, because the Spirit is the Truth”.

Why the mention of human testimony related to blood and water?

The human vessel is comprised of physical elements; blood and water.

This is why when Abel was slain, his blood cried out to God.

This is why when man's body perishes, it returns to the dust from which it was created.

This is also why it is through water which men are saved,.

This reflects how God saved mankind during the days of Noah,.

This separation of Noah and his family from the sinful earth reflects how Today man is renewed when born of the water ...

... and ...

... by God's election when born of His Spirit.

This is why it is the blood of Yeshua the Messiah who cleanses our sin, since only by the spilling of blood was sin to be atoned for.