[Michael The Disciple]

Originally Posted by Esaias

By way of explanation, I view holy days as a teaching method. They are designed to teach us things as we reflect on "why is this done?" The important thing is to learn by doing, and as learning is always a progression, one can expect to "make lots of mistakes" in the beginning. But it's all good, because Jesus is our Teacher and we are His students and we are learning as we go. He isn't a mean headmaster with rod of correction just waiting for an opportunity to smack our knuckles when we hit the wrong note on the piano.

It's like teaching a baby to walk. The parent is overjoyed at each successful step the baby takes. If the baby falls, the parent helps the baby back up. The whole process - the successes, and the "fails" - are all part of the joy of learning and growing. God is our Father, and we are His children, literally.

The bolded seems to be equating keeping feasts and sabbaths with growing in the Lord.

Steve Waldron on Christians and feast days and sabbaths.