Thanks Mike, I've read the book many times. What you need to understand is that "I'm" not reverting back to anything. I'm letting Christ live in and through me. The result of this gives the appearance that "I" am conforming to God's laws. I certainly couldn't do it on my own. That is freedom of the spirit. I no longer have to strive to please God. I can let Christ live in and through me to fulfill the requirements of the law.
Galatians 3:24-25 -- The law was our schoolmaster to bring us unto Christ, that we might be justified by faith. But after faith has come, we are no longer under a schoolmaster.
That is exactly right. By the acceptance of Christ, the law is written into our hearts by presence of Christ living in and through us.
Jer 31:33 but this shall be the covenant that I will cut with the house of Israel: After those days, says Jehovah, I will put My Law in their inward parts, and write it in their hearts; and I will be their God, and they shall be My people.
This is the new covenant.
Which apparently inlcudes discouraging others from celebrating the birth of Christ just as the angels and the wise men did -- through songs of praise, celebration, and gift-giving. That's some freedom that you and 2sheep have.