How do we know God can save rebels?

The biblical testimony reveals that God saves rebels through His grace, as portrayed in Psalm 107:12-14. He brings down the proud heart with labor, leading individuals to realize their desperate condition and compel them to seek His mercy. This process is evident in the story of the prodigal son, who, after squandering his inheritance, returned to his father in humility, seeking forgiveness. Likewise, when individuals recognize their rebellion against God and cry out for deliverance, God is faithful to respond and bring them out of their darkness, illustrating His mercy and redemptive power. We see that God delights in redeeming those who recognize their need for salvation.