Saying it's right because my religion says so is even worse. imo
I have not said, nor ever said that.
Furthermore, I don't think I've quoted the Qur'an in this thread at all.
OK, let me correct that. saying something is wrong simply because one thinks so is not etc., etc.
I have been using common sense, which I am told is not necessary to understand the trinity
Well, the Father is God, Jesus declared His own divinity, and said He would send another:
"But the Paraclete, the Holy Ghost, whom the Father will send
in my name, he will teach you all things, and bring all things to your mind, whatsoever I shall have said to you." (John 14:26, emphasis mine) "But when the Paraclete cometh,
whom I will send you from the Father, the Spirit of truth, who proceedeth from the Father, he shall give testimony of
me." (John 15:26, emphasis mine)
Common sense would say the Father is God, the Son is God because no man has the authority to direct the Holy Spirit of God (as well as stated, implicitly or explicitly elsewhere), and the Holy Spirit of God is, also, God.
See – plain common sense.
Christians are baptized "in the name of the Father and of the Son and of the Holy Spirit" the practice of the church from the beginning, and we can assert that from the Didache, written around 60-80AD. It has been the profession of faith of the Christian since Apostolic times.
In discussing the Holy Trinity, there is a distinction between
theologia (theology) and
oikonomia (economy). In this sense, 'economy' refers to the works by which God reveals Himself and communicates His life. It is through the
oikonomia that the
theologia is revealed, while the
theologia illuminates the whole
oikonomia.
The
oikonomia is common sense inasmuch as it is a belief in Father, Son and Holy Spirit. Theologia proceeds according to what has been revealed, contemplated (as best one is able) through one's own capacities and is, of course, not a simple understanding, but nevertheless is neither irrational nor illogical.