It is written in following books of religions that God is only one but there was a disagreement in His personal and perfect name since thousands of centuries among human beings.
Islam: Say: He is Allah, the One and Only. (Holy Quran 112:1)
Christianity & Judaism: Hear, O Israel, The Lord, Our God, is one Lord. (The Bible, Mark 12:29, Deuteronomy 6:4)
Hinduism: “Ekam evadvitiyam” “He is One only without a second." (Chandogya Upanishad 6:2:1)
Sikhism: "There exists but one God, who is called The True, The Creator, Free from fear and hate, Immortal, Not begotten, Self-Existent, Great and Compassionate." (Sri Guru Granth Sahib, vol:1, Japuji verse:1)
Zoroastrians (Parsis): "He is one; He is without an origin or end. He has no father or mother, wife or son." (Dasatir, Ahura Mazda. Refer to Yasna 31:7 & 11)
In the 21st century of modern science and technology while there are computer and video editing experts, Allah practically demonstrated His great miracles through various creatures of nature against the established rules of science and physics so that wise peope who can use their common sense will enter in Islam.
All the creatures of nature on this page are taken from real world people who shared these sensory miracles on YouTube video platform and these have nothing to do with magic, sorcery, spiritual power, black power, video editing effect, deception, or any other trick.
You'll not find any name of other gods naturally written or spoken through mouth of creatures of nature so these proofs are 100% natural, neutral, observable, impartial, physical and irrefutable prepared and collected by the mercy and blessings of Allah the God of all human beings, creator of the universe and controller of nature.
Now you can be 100% sure that the God who was talked about in many religions as "One God" is no one else but Allah (his real name) after seeing and verifying from creatures of nature.
Human beings should only believe in Allah (God) to save themselves from hard punishment after their death and also stop doing religious wars in the name of imaginary gods which are reason for poverty and destruction of innocent people in physical world so they can live in their life with peace and harmony permanently.