It is good the way you began from early first principles and built toward your conclusion about modern social action. You showed that God’s salvation is a package containing earthly rescue, forgiveness from sin, and a new life of freedom. God’s gift of freedom means both the inner freedom of our heart choices and the outer freedom of our actions and words. God rescues people from inner compulsion and outside oppression. This reasoning may have a chance of resonating with Christians who are leery of social action.