How do we know that God's grace is sufficient for all sinners?

The story of Zacchaeus illustrates that God's grace is abundant and sufficient for every sinner. Zacchaeus, a chief of publicans and known for his sinful ways, received a personal call from Christ, demonstrating that God's grace extends to the most unlikely individuals. This narrative shows that salvation is not based on our merit but solely on God's mercy. As Christ said, ‘The Son of Man has come to seek and to save that which was lost,’ revealing His purpose to save even those who seem beyond hope.