How do we know God's mercy is available to everyone?

The availability of God's mercy to all individuals is depicted in the story of the Canaanite woman in Matthew 15:21-28, where her great faith is met with Christ's abundant mercy. Despite her being a Gentile, she recognized her need and sought mercy from Jesus, demonstrating that God is not confined by human boundaries or prejudices. This incident illustrates that anyone who acknowledges their need for mercy and approaches Christ in faith will find it. God's promise to the world highlights that His mercy is indeed not exclusive, but rather comprehensive and inclusive for all who seek it sincerely.