It's actually the greatest mystery of christianity and the biggest debate of the church of the early days. What is the relation between the Father and the Son but also the holy spirit. All the geat disagreements (and not political disagreement like in the protestant reformation) are about this.
For some ther was only God and jesus and thus refuted the existence of the holy spirit. Some said jesus was a direct incarnatation of god thus refuting his humane nature. I like the mainstream catholic take on the holy nature of God, expaining that ther is only one god but incarnated by three diffferent entities who were not sames but all being god at the same time. God has created man in his own image. Jesus was man and God. The paradox is a proof of allmightyness and the source of the adoration.