How do we know that God's grace is extended to the undeserving?

Isaiah 65 provides a profound insight into God's unmerited grace, as He reveals that He is sought by those who do not ask for Him. This demonstrates the sovereign grace of God, showing that His salvation is not based on human efforts or seeking, but on His initiative and mercy towards those who are undeserving. The reality of grace extends beyond Israel’s disobedience; it underscores God’s readiness to save those who may be least expected to qualify for His favor. This grace is vividly embodied in the work of Christ, who fulfills God's promise of redemption, illustrating that God actively pursues His people even when they are unresponsive to Him.