How do we know God's mercy is unconditional?

The unconditional nature of God's mercy is revealed throughout Scripture, particularly in passages like Romans 9, where God declares His sovereignty in dispensing mercy. Paul’s testimony in 1 Timothy 1 emphasizes that he did not deserve mercy; rather, he obtained it as a gift. If mercy were conditional on our actions or understanding, then no one would receive it, as all are inherently sinful and ignorant of God. Instead, God bestows mercy upon whom He wills, demonstrating His glorious grace and sovereignty in salvation.