There Is No Confusion in the True Faith, and If Confusion Is Present, Then the Presence of Superstition Must Be Suspected

Every true faith created by God is very easy. The commandments of the faith are not matters that are hard to reflect on or difficult to understand or that need to remain a mystery. The existence of our Almighty Lord is obvious. The existence of God, His creative artistry and His closeness to and dominion over the entities He creates are all matters that are easy to understand. Confusion never has any place in true faith. Anyone looking with reason and good conscience will perfectly grasp the fact that the Almighty Creator is the Lord and Sole Ruler of all, that His omnipotence means He has no need for a son, that He is the closest to all beings and that there is no other power than Him. This means that the proponents of the Trinity and their followers are mistaken.

If the presence of confusion of the kind that the proponents of the Trinity describe is alleged, then this is grounds for suspicion. The true faith must have given way to superstition there. If it has become so difficult to understand and describe the nature of Almighty God, Who clearly exhibits His sublime works in the tiniest speck of dust, in the giant void of the universe or in the depths of a single atom, then the trickery of the devil must be suspected.

There is one single Creator, and everything in the universe points to the artistry of this sublime Creator. God, the Creator of all, is certainly mighty enough to keep them all under His control and supervision at every moment. There is no need for intermediaries to reach our Lord. There is no need for other deities (surely God is beyond that). God is He Who knows us better than we know ourselves and who observes us at every moment. Therefore, sincere Christians must be aware that they are in a state of confusion and must open their hearts to the clear, comprehensible and delightful monotheistic conception of the true faith. God reveals in the Koran that any other way is "schism":

If their faith is the same as yours then they are guided. But if they turn away, they are in schism. God will be enough for you against them. He is the All-Hearing, the All-Knowing. (Koran, 2:137)

Belief in the Trinity Is a Major Obstacle to Appreciating God

One of the greatest problems facing Christians who regard belief in the Trinity as an immutable Church doctrine is that they are unable to appreciate God properly. Almighty God created the entire universe, from giant voids to exceedingly minute worlds, from nothing. There is no doubt that God, Who created a glorious universe from nothing, Who created everything within in it in a balance and order, Who flawlessly created man and all other living things inside this glorious system, and Who bestowed a destiny on human beings, has the power to watch over and protect every being He creates. Our Lord is omniscient. He sees and hears all. Nothing is secret from Him. Not a single living thing can take a single breath without His knowledge, not a leaf can move and not an electron can change location. God has the power, if He so wills, to destroy them all and then create them again from nothing with a beauty that has never been seen before. This is certainly an easy matter for God. Everything happens just by our Lord telling it to "Be!" God sees what all eyes see, and hears all sounds. It is also He Who creates what every eye will see and what every ear will hear. Some Christians, who fail to fully understand the Islam shown by God in the Koran, try, in their own eyes, to justify the dogma of the Trinity by claiming that God is far distant from human beings in Islam. Yet God is not distant from us. He is with us at every moment. God is everywhere, and Islam tells us so in the verses of the Koran. It is the idea of the Trinity, not Islam, that regards God as being at a distance. For that reason, the idea that God can only reach His servants through Jesus (pbuh) prevails. That idea stems from a failure to properly understand and appreciate God.

There are some Muslims, of course, who regard God as being far removed from them. But they base their ideas, not on the Koran, but on nonsense of their own fabrication. The knowledge of the thing they espouse therefore does not exist in Islam. In fact, those Muslims who think that God is far away from them and the Christians who believe in the Trinity and think that God can only access them through intermediaries share the same false perspective. As our Almighty Lord says in the Koran:

We created man and We know what his own self whispers to him. We are nearer to him than his jugular vein. (Koran, 50:16)

So wait steadfastly for the judgment of your Lord – you are certainly before Our eyes. (Koran, 52:48)

... He knows everything in the land and sea. No leaf falls without His knowing it. There is no seed in the darkness of the Earth, and nothing moist or dry which is not in a Clear Book. (Koran, 6:59)

... He knows what they keep secret and what they make public. He knows what their hearts contain. (Koran, 11:5)

... Nothing is hidden from God either on the Earth or in heaven. (Koran, 14:38)

As revealed in many other verses in addition to the above, He is the closest to everyone. Nobody, no other entity, is closer to one than God. God sees through every eye and hears through every ear. God is not only in the heavens, as some Muslims and Christians think, but everywhere. Even if nobody else sees a leaf fall, God sees it and knows. Even if the atoms, electrons and quarks in the depths of the universe, the seeds deep beneath the ground and the ever-present actions of our cells, a totally invisible world, are unknown to us, God knows each one at every moment and sees it at every moment.

Trinitarians who maintain the existence of three separate deities with different attributes are unaware of the sublimity, might and power of God described in these pages. Were they aware of it, they would immediately understand the falsity of the idea that God reaches them through various intermediaries. God has no need of intermediaries. God is He Who knows His creations before their creation and what is hidden in their hearts.

If their belief is the same as yours then they are guided. 

But if they turn away, they are in schism. God will be enough for you against them. He is the All-Hearing, the All-Knowing.

(Koran, 2:137)In order to understand this better, they need to know and understand the concept of "manifestation," and therefore the truth about matter. In that event, Christians will better realize that what is described here is not a metaphysical belief, and that this reality explicitly revealed by God has been scientifically proven. This subject is discussed in detail in the third section.
http://harunyahya.com/en/books/179040/Christians-Must-Heed-Jesus/chapter/14944/Chapter-2-The-error-of-the-trinity

http://harunyahya.com/en/books/179040/Christians-Must-Heed-Jesus/chapter/14944/Chapter-2-The-error-of-the-trinity