The true God is the Creator and worshiping other than the true God implies the claim that they are deities. The God must be a creator and the proof of his being a creator must be either by witnessing what he has created in the universe or by revelation from God Who is proven to be a Creator. So, if this claim has no proof to support it, neither from the creation of the witnessed universe nor from the words of the Creator, then such deities are definitely false deities.
{Indeed, Allah commands you to return trusts to their owners, and when you judge between people, judge with justice. What an excellent exhortation from Allah to you! Indeed, Allah is All-Hearing, All-Seeing.} [234] Surat an-Nisā’: 58.
First of all, the true religion must be compatible with man's initial natural disposition that needs a direct relationship with its Creator without the interference of mediators, which represents man's virtues and good qualities.
The statement that there is no absolute truth, which is adopted by many, represents in itself a belief concerning what is right and wrong, and those who adopt it are trying to impose it on others. They adopt a certain standard of behavior and try to compel all people to ...
