Relativism Defined

Elias brought [the prophets of Baal] down to the torrent Cison,
and killed them there. 1 Kings 18:40

Relativism is the philosophy that truth is determined by the individual. The truth is what you think it is. A false claim, a redefining, of truth therefore. Because, if everything is truth then that means that nothing is true. The fundamental meaning of truth being it's relationality, it's inter-communicability, it's universal nature.

Relativism is to philosophy what pantheism is to theism.
If everything were god then there would be no god, because God, by definition, is the One above all, beyond all, in charge of all, Creator of all.

Exodus 32:26-28 Then standing in the gate of the camp, he said: If any man be on the Lord's side let him join with me. And all the sons of Levi gathered themselves together unto him:

And he said to them: Thus saith the Lord God of Israel: Put every man his sword upon his thigh: go, and return from gate to gate through the midst of the camp, and let every man kill his brother, and friend, and neighbour.

And the sons of Levi did according to the words of Moses, and there were slain that day about three and twenty thousand men.