What is the newness of the spirit?
The newness of the spirit is the spiritual realm of serving God after being delivered from the Law, which was an administration of death. It is not the oldness of the letter but a whole new frame of thinking, entered by believing the Gospel through faith plus nothing, not by fleshly legalism.
Les explains that the newness of the spirit refers to serving God in the spiritual realm after being delivered from the Law. The Law was an administration of death, and believers are no longer held by it. Instead of the oldness of the letter, there is a whole new frame of thinking. This comes by believing the Gospel—Paul's Gospel through faith plus nothing—not by the flesh. He warns that the flesh wants legalism, putting people back under some kind of Law, as the Galatians were tempted to do.