Why is Christ called our righteousness?

In 1 Corinthians 1:30, we are told that Christ Jesus is made unto us righteousness. This means that through faith, His perfect obedience and His sacrificial death are credited to us. If Christ were not our righteousness, we would remain in our sins and unable to attain the holiness required by God. Furthermore, Philippians 3:9 emphasizes that we need a righteousness that comes from God, through faith in Christ, rather than relying on our own works. Thus, acknowledging Christ as our righteousness is fundamental to our salvation.