First things first. The Trinity is not God divided 33% to each.
We as finite beings (using 2 – 3% of our brains)are trying to understand an infinite concept — such as the Trinity of God. Obviously, we may not be able to fully wrap our arms (i.e. our heads) around this to fully understand all it encompasses.
Many of our examples which we have used in this thread and others not yet mentioned, work on the surface but break down past that, (i.e. pushing the analogy too far). Again we are using finite examples (ice, water, steam, hard boiled egg example, prizm light three primary colors, etc) to try to picture/understand an infinite God.
All three members of the Trinity are Fully God (100%) but yet they are all of the same substance. This was the main subject of debate at the Council of Nicea in 325 AD. It is the reason for the Athanasian Creed, where 318 bishops came together to work out and formulate a statement of orthodox belief to combat the heresy that was spreading and being preached by Arian believers. Here is a portion of that creed:
Now this is the catholic (catholic in this context & at this time in history means – universal) faith, that we worship one God in trinity and trinity in unity, without either confusing the persons, or dividing the substance. For the Father’s person is one, the Son’s another, the Holy Spirit’s another; but the Godhead of the Father, the Son, and the Holy Spirit is one, their glory is equal, their majesty is co-eternal.
Such as the Father is, such is the Son, such is also the Holy Spirit. The Father is uncreate, the Son uncreate, the Holy Spirit uncreate. The Father is infinite, the Son infinite, the Holy Spirit infinite. The Father is eternal, the Son eternal, the Holy Spirit eternal. Yet there are not three eternals, but one eternal; just as there are not three uncreates or three infinites, but one uncreate and one infinite. In the same way the Father is almighty, the Son almighty, the Holy Spirit almighty; yet there are not three almighties, but one almighty.
Thus the Father is God, the Son God, the Holy Spirit God;
and yet there are not three Gods, but there is one God.
Thus the Father is Lord, the Son Lord, the Holy Spirit Lord; and yet there are not three Lords, but there is one Lord. Because just as we are compelled by Christian truth to acknowledge each person separately to be both God and Lord, so we are forbidden by the catholic religion to speak of three Gods or Lords.
The Father is from none, not made nor created nor begotten. The Son is from the Father alone, not made nor created but begotten. The Holy Spirit is from the Father and the Son, not made nor created nor begotten but proceeding. So there is one Father, not three Fathers; one Son, not three Sons; one Holy Spirit, not three Holy Spirits. And in this trinity there is nothing before or after, nothing greater or less, but all three persons are co-eternal with each other and co-equal. Thus in all things, as has been stated above, both trinity and unity and unity in trinity must be worshipped. So he who desires to be saved should think thus of the Trinity.
So you can see that the early Church Fathers even had a time to explain this infinite concept with a finite understanding.
We can see examples of the Trinity from Scriptures, the baptism of Jesus, being one: the Son being batized, the Father speaking from heaven and the Holy Spirit descending. There are other examples but this post is growing too long.
Peace & Grace