slimboyfat:
The Bible itself says Satan was the original serpent and the first liar.
Fallacious argument from authority, fallacy of composition.
The Christian Bible says that. But it’s just because a later work retrofits a character from an earlier work without regard to the actual development or original purpose of the source material, not because any of it is actually true.
The Hebrew Bible doesn’t say the snake is Satan at all though.
So if you don’t care whether something is actually true, then yes ‘Satan is the first liar’ according to Christianity (duh). But it’s only true to the extent that it is an entirely mundane and pointless unfounded assertion.