What’s the deal with the devil?

image: CupHead (video game)
{made in a style of 1930’s USA cartoon}

To paraphrase Mark Kishon Christopher;

Understand that every phrase, a conversation is a contract made between two.
A contract is an agreement, a covenant, if you like.

Since the dark ages, the self-proclaimed “elites” made sure the illiterate were first of all- illiterate; second, afraid of leaving the state of profanity.

Hence they depicted every proper, conscious signage of a scroll between two sides as a “Deal with the devil”. Now you know.

The adversary doesn’t have any “small letters” in there;
He simple and plain does not want your soul.

Not to say that evil is nonexistent.