What does the Bible say about undeserved mercy?

The concept of undeserved mercy is profoundly illustrated in the book of Hosea, where God commands Hosea to marry Gomer, a woman of whoredoms, symbolizing unfaithfulness. Despite Gomer's repeated unfaithfulness, Hosea's unwavering loyalty represents God’s mercy and faithfulness to His people, who often stray like Gomer. This reflects how God, even when we are unfaithful, shows steadfast love and mercy, as seen in 2 Timothy 2:13, 'If we are faithless, he remains faithful, for he cannot deny himself.' Thus, God’s love for His people endures despite their sin, showcasing His grace and mercy.