How do we know grace is for the sinners?

Jesus makes it clear in Luke 5:32 that He came not to call the righteous, but sinners to repentance. This paradigm redefines who receives the Gospel: it is not the self-righteous or those who believe they can earn salvation through works. Instead, it's the sinners—those who recognize their spiritual poverty—that are drawn to Christ. This highlights the core of sovereign grace theology, which posits that salvation is entirely a work of God’s grace alone and is accessible to those who humbly accept their need for mercy and help.