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

The account of the Syrophoenician woman in Matthew 15:21-28 illustrates the universal call to seek God's mercy regardless of one's background. Jesus' interactions with the woman reveal that even those who are seemingly outside the covenant community can find help and healing through faith in Him. As shown in Isaiah 55:6-7, God invites all weary and sinful individuals to seek Him while He may be found. His grace, based on Christ's merits, is crucial for salvation, demonstrating that His mercy extends to anyone who acknowledges their need for Him and seeks Him, coming in faith for help.