RIGHTEOUSNESS is a universal need, and God's provision of it was typically indicated in the ritual of the law.The offerings were designed to impress certain elemental lessons concerning man's unrighteousness, and the need for the provision of a way of approach to God. But many witnessed the ritual and were attracted by it, yet remained "without experience" of the word of God, which could have instructed them and enabled them to grow in understanding.

JOHN CARTER, The Letter to the Hebrews, page 88