Why does the flesh want to be under the Law?
The flesh wants to be under the Law because it is part of the old Adamic nature to desire some kind of law. This inclination manifests as legalism, as seen in the Galatian churches, rather than serving in the newness of the Spirit.
Les teaches that believers are delivered from the Law, which was an administration of death, so that they should serve in newness of spirit and not in the oldness of the letter. He points to Galatians 3:3, where Paul asks if having begun in the Spirit, they now seek to move into a deeper spiritual life by the flesh. The flesh in the Galatian churches wanted legalism and Law. Les explains this is just part of the old Adamic nature to want to be under some kind of a Law.