GOD: I give you S-class stealing, and you use it to steal from me?

It is a fantasy MMO novel. The protagonist accidentally receives the S-class stealing ability given by God, but decides to steal from God. Guided by the rebirth and return, he befriends a group of like-minded partners and embarks on a journey to find God. After a fierce battle, they discover the secret of God and successfully destroy God's core, dissipating God's power and revealing the truth that God is not omnipotent.