What is the soul responsible for?

I'm currently living in a lot of fear of hell after I did something which made me very very worried I'd forfeited my soul.

I'm trying to understand what the soul actually is in order to reassure myself I'm alright.

How do you know your soul is connected to God?

Is the soul responsible for the belief?

Is it responsible for love?

Is it possible to believe without the soul amd just the spirit?

I know that the bridge between your soul and Jesus is greater than any contracts or deals previously made with the evil one, but how can you be sure you that bridge is formed within your soul, and you're not just feeling the spirit?