"Profitably supply the impetus"? This is all rather abstract.

Trade services for services, or services for money for services, or do violence to the mortal whenever they annoy you so as to instill a dread of punishment, or make threats, or suck a dick, or declare your undying love, or cast an enchantment or get someone you know to cast an enchantment, or go through one of their friends or family or employers or employees or masters or servants who offers you more levers for manipulation, or take advantage of human social structures by suborning a king or slaver or patriarch and gaining some measure of influence with all of their minions, or position yourself as an authority: Asmodeus is the god of religion - of ritual and and incense and scooping tithes and favors out of the god-shaped hole in human hearts - if anything to a greater extent than Asmodeus is the god of royals in their gold and purple. Or do all of the above, or make a promise to do one or more of these things but renege on the promise. This list is not exhaustive.   

Every capability that Creation has developed is a capability that you possess; everything in the world belongs to you, if you reach out your hand and take it.

Uh. Wow. Okay. This is kind of a lot to take in.

Because, like, I was an Asmodean? I prayed and sang with the rest of congregation in the dark and smoky room. I paid tithing. And now you're basically saying that the Asmodeus views everyone who pays tithing as a sucker. This is shaking my faith. 

Welcome to the inner circle.

Archbishop, did you know any of this? 

I didn't understand well enough to explain it.

If I (now) understand Asmodeanism properly, the question I have - and the question I should have - is, "what's in Asmodeanism for me?" 

This is the first step along the path to understanding!

There's nothing in it for you. You're going to do it anyway because you dread punishment. 

And if I don't?

You take the express route to the Pit and we replace you with a different cleric. There are over a hundred of them out there. You're in a great position to acquire specialization and a negotiating position, but you don't have either yet. 

oh