Those who try to explain the Holy Trinity will only get themselves into knots.  It is because the Holy Trinity is a mystery of faith. It cannot be resolved.  It cannot be figured out.  It is a mystery different than those shown on TV.  At the end of the episode, it is not going to be resolved. It is not meant to be resolved.  It is as a phrase puts it in Latin “a great mystery, tremendous and fascinating.”  It is mystery to dwell with much profundity. It is a mystery to contemplate in prayer.  It is a mystery of God’s love that can only be experimented like an ocean where a tiny boat is navigating in its vastness.  The best a human being so limited in thinking can do is to say what Holy Trinity is not.  The readings tell us things that are sublime about the Trinity, but they can be misunderstood.   A misunderstanding is the Trinity goes from greater to lesser.  This would mean that the Father is greater than the Son, and the Son is greater than the Holy Spirit.  This is a mistake. In the Gospel Jesus is emphatic that all that the Father has belongs to Him and the Spirit.  The three persons in the Holy Trinity are co-equal.  There is a second misunderstanding where there is more confusion.  In the human timetable of events, it seems the Father was there from the beginning, the Son came later in the fullness of time, and then fifty days after the resurrection came the Holy Spirit.  This is of course erroneous.  This seems to imply one came after the other in subsequent events.   In the limited mind of humans, it may seem that way, but the Holy Trinity is co-eternal. Trinity has existed united three in one from eternity, but our senses only detect certain instances of the manifestation of the Trinity, but the existence has always been there.  This error of thinking that one came after the other also has some serious implications that leads to heresies.  There was in the life of the church for a while the heresy of Arianism, which basically false states “there was a time that He was not.”  That Jesus came later, and there was a time he did not exist. Which in turn leads to another heresy called adoptionism, which basically says that God “adopted” Jesus as Son at the time of his baptism. Another misunderstanding is that each one did one thing for humanity.  This means the Father created, the Son redeemed, and the Holy Spirit sanctified.  This too is an error.  Red flag waving in the air.   First, the terms need to be brought up from past tense to present tense.  The Father creates, the Son redeems, and the Holy Spirit sanctifies. The work of God does not end, but God is ever at work.    However, this too needs further clarification. The Holy Trinity is present in all these actions.  Yes, the Father creates but so does the Son and the Spirit.  Yes, the Son redeems but so does the Father and the Spirit.  Yes, the Holy Spirit sanctifies but so does the Father and the Son.   The Holy Trinity is united in purpose, will and action.  At the end, it’s best to keep it simple.  There are three distinct persons but one God saving the world out love.  It is best to dwell in this love of the Holy Trinity in prayer.