How do we know that Christ is the Just One?

The term 'Just One' is used in Acts 22:14, where Ananias tells Paul that God has chosen him to see the Just One and hear His voice. This designation emphasizes that Jesus embodies perfect righteousness, fulfilling all aspects of the law while being fully divine and human. Isaiah describes Him as the One who magnifies the law and makes it honorable (Isaiah 42:21). The Just One is not only sinless but also the source of righteousness, enabling His people to be justified through faith in Him. Through his atoning death and resurrection, He demonstrates God's justice and mercy in a way that reconciles sinners to Himself.