How do we know that Christ's kingdom is established in mercy?

The establishment of Christ's kingdom in mercy is demonstrated through His work of salvation, as seen in Isaiah 16:5. It indicates that the throne of Christ is rooted in God's mercy, reflecting His compassion for a sinful people. This is evident from the history of Israel, where God's mercy preserved them through unprecedented trials so that the Messiah might come from them. In the New Testament, we see this merciful principle fulfilled in Christ, who gives life to the spiritually dead. Through His sacrificial death and resurrection, He calls sinners to Himself, making it clear that His kingdom is not constituted by merit but by divine grace. Therefore, all who place their faith in Him are welcomed into this kingdom of mercy.