We have already established that, like Abraham, we are put in right relationship with God by faith. Now we ask, faith in what? This passage shows us that faith is not a general sense of wellbeing. Faith is not an optimistic view of the future based on hope in the goodness of people. Faith, the kind that puts us right with God, has a specific object of trust. Faith is believing and trusting God who delivered up his Son on the cross for our sins, and raised him from the dead for our salvation. This kind of faith is personal and life-transforming. The righteous shall live by faith.