The Trinity is a sophisticated philosophical concept; considering that Christianity has undergone alot of editing and distortion throughout its history, it's not surprising that we've inherited a garbled and nonsensical version of this concept.
Broadly speaking:
The Father of the Trinity is the primal point of Creation, the "First Cause" to use a popular but misleading term. This primal point has an extremely refined and abstract nature, and is beyond regular human comprehension. The Father gives rise to fundamental principles of Creation, which in turn give rise to successively more concrete principles and phenomena (including the physical world and the human mind).
In the midst of this chain of Creation there is The Son, which has been described as a cosmic reflection of The Father. The Son is like a bridge between the more abstract fundamental side of Creation, and the more concrete distinctive side of creation that humans are familiar with. Thus the Son is the way through which The Father can be known by human comprehension, and this is why Christ asserts in John 14:6 that "no one comes to the Father except through me".
Because both The Father and The Son occupy very lofty places in the paradigm of Creation from a human perspective, it is necessary for there to be a means by which the human mind can embark on the process of communion with the Divine. The Holy Spirit provides this means: it is the aspect of the Divine which is most closely and directly associated with the physical world, and it might even be regarded as permeating the physical world. This function of the Holy Spirit is exemplified in Luke 3:22 where the Holy Spirit descends on Jesus, thus enabling Christ's ministry to begin.
Broadly speaking:
The Father of the Trinity is the primal point of Creation, the "First Cause" to use a popular but misleading term. This primal point has an extremely refined and abstract nature, and is beyond regular human comprehension. The Father gives rise to fundamental principles of Creation, which in turn give rise to successively more concrete principles and phenomena (including the physical world and the human mind).
In the midst of this chain of Creation there is The Son, which has been described as a cosmic reflection of The Father. The Son is like a bridge between the more abstract fundamental side of Creation, and the more concrete distinctive side of creation that humans are familiar with. Thus the Son is the way through which The Father can be known by human comprehension, and this is why Christ asserts in John 14:6 that "no one comes to the Father except through me".
Because both The Father and The Son occupy very lofty places in the paradigm of Creation from a human perspective, it is necessary for there to be a means by which the human mind can embark on the process of communion with the Divine. The Holy Spirit provides this means: it is the aspect of the Divine which is most closely and directly associated with the physical world, and it might even be regarded as permeating the physical world. This function of the Holy Spirit is exemplified in Luke 3:22 where the Holy Spirit descends on Jesus, thus enabling Christ's ministry to begin.