And it shows nothing of the old man can survice into the new man. Our old life was so completely corrupted we need complete renewal.Yep, and this was foreshadowed in the OT. After the golden calf incident, God intended to wipe out the Israelites and start anew, Moses interceded with a plea in defense of not the Israelites, but God's reputation - God would be a joke and a failure to other nations, knowing His deliverance of the Israelites out of Egypt, only to let them die out in the wilderness. In the end, though, God did let the Israelites die out in the wilderness, but only that generation out of Egypt, the next generation born in the wilderness got to march into the Promised Land. That symbolizes spiritual birth. It is no coincidence that Joshua, the chosen leader, shares the same name with Jesus, "God saves."
I've heard it mentioned that Moses was not able to lead the Israelites into the promised land being an illustration of the fact that the Law can't save.
Much love!