How can I be sure that God will have mercy on me?

The assurance of God's mercy is a central promise found in Isaiah 55:7, where God invites the wicked to return to Him, promising that 'He will have mercy upon him, and to our God, for He will abundantly pardon.' This promise is not based on our worthiness but on God's nature; He is a merciful God. When we genuinely seek Him, acknowledging our sins and our need for forgiveness, we can be confident in His promise to pardon us abundantly. This abundant pardon underscores the grace of God amidst our failures.