God Is Sovereign
Colossians 1:16 For by him were all things created that are in heaven and that are in earth, visible and invisible, whether they be thrones or dominions or principalities or powers: all things were created by him and for him:
The only reason the planets and stars follow their prescribed orbit is because God holds them in place.
The only reason the molecules that make up our bodies, and the world around us doesn't fly off into space is because God holds it all together.
Don't think for a minute that we don't need God. He is sovereign over the entire universe which He has created.
He can take a sinner like you and me who ought to be in Hell for our sins, save us by His grace, set us free from the bondage of sin and put us on a new path. That is powerful.