When Paul says that we are saved by "the faith of/in Jesus Christ," what does he mean? Paul believed this faith was a faith that tore down walls, not a faith that built walls up. Paul believed this faith removed the demarcations that had divided the community, instead of being a faith that further splintered communities. This was not any faith, this was the faith of Jesus Christ - it is the Lord's faithfulness that offers righteousness and claims us as God's children.