Do you have to sell your soul to become powerful?
No my dude. Start here
Search this forum there are ton of stuff like this, rather than posting same shit again and again .
The day you sell your soul you will become powerful; after 2 days you will die in a car accident and keep serving the spirit for eternity. This is what Christians say.
And wtf will you do after becoming powerful? Make Jesus suck your dick?
Powerful is based on the knowledge you gain and how you apply it with your will on reality. It has nothing to do with soul selling but rather your own capabilities and development.
Lol yes you could sell your soul for power, but how powerful could you really be if you are servant to another spirit?