What is the difference between the law and the indwelling Holy Spirit?
The law serves as a mirror that shows man his utter sinfulness and helplessness. The indwelling Holy Spirit, however, is something totally different. The law reveals sin, while the Spirit's indwelling is distinct from that exposing work. The contrast is direct.
Les teaches that the law was just a mirror showing man his utter sinfulness and helplessness. But the indwelling Holy Spirit is something totally different. He then turns to Ephesians 1, where God sent His own Son in the likeness of sinful flesh. Jesus Christ, the Creator God of Genesis 1, came down to man's level in man's frame of flesh to condemn the old Adam, sin, and the flesh. That was His whole purpose in coming, while the indwelling Holy Spirit stands in contrast to the law's mirror work.