What does it mean to be 'clothed in righteousness'?

To be 'clothed in righteousness' signifies the believer's identity and standing before God as justified through faith in Jesus Christ. In the vision of Zechariah, Joshua's filthy garments represent sin, while the new garments signify forgiveness and righteousness imputed from Christ. This is foundational in Reformed theology, where it's believed that through Christ's atoning work, believers are made righteous not by their works, but entirely by God's grace. This righteousness distinguishes the believer from their past sinful state, affirming their acceptance before God and their capacity to stand in His presence. Such a transformation enhances the believer's relationship with God and is central to the understanding of salvation.