Actually, one's choice or volition will always be rebellion toward God. We do not have power to be righteous.
It's God's mercy that shines the light of truth and compels one to respond to His irresistible grace.
re: “Actually, one’s choice or volition will always be rebellion toward God. We do not have power to be righteous.”
Yes, in the Calvinist view - God ordained man to sin. Man has not free will to do anything other than what God ordained, so therefore God is the source of evil.