Numbers 15

Numbers 15:38-41 (KJV)
38 Speak unto the children of Israel, and bid them that they make them fringes in the borders of their garments throughout their generations, and that they put upon the fringe of the borders a ribband of blue:
39 And it shall be unto you for a fringe, that ye may look upon it, and remember all the commandments of the Lord, and do them ; and that ye seek not after your own heart and your own eyes, after which ye use to go a whoring:
40 That ye may remember, and do all my commandments, and be holy unto your God.
41 I am the Lord your God, which brought you out of the land of Egypt, to be your God: I am the Lord your God.

Numbers 15:25-28 (KJV)
25 And the priest shall make an atonement for all the congregation of the children of Israel, and it shall be forgiven them; for it is ignorance: and they shall bring their offering, a sacrifice made by fire unto the Lord, and their sin offering before the Lord, for their ignorance:
26 And it shall be forgiven all the congregation of the children of Israel, and the stranger that sojourneth among them; seeing all the people were in ignorance.
27 And if any soul sin through ignorance, then he shall bring a she goat of the first year for a sin offering.
28 And the priest shall make an atonement for the soul that sinneth ignorantly, when he sinneth by ignorance before the Lord, to make an atonement for him; and it shall be forgiven him.