Exodus 23:15 "You shall observe the Feast of Unleavened Bread; for seven days you are to eat unleavened bread, as I commanded you, at the appointed time in the month Abib, for in it you came out of Egypt. And none shall appear before Me empty-handed.

Leviticus 5:15 "If a person acts unfaithfully and sins unintentionally against the LORD'S holy things, then he shall bring his guilt offering to the LORD: a ram without defect from the flock, according to your valuation in silver by shekels, in terms of the shekel of the sanctuary, for a guilt offering.

Leviticus 5:16 "He shall make restitution for that which he has sinned against the holy thing, and shall add to it a fifth part of it and give it to the priest. The priest shall then make atonement for him with the ram of the guilt offering, and it will be forgiven him.

Deuteronomy 16:16 "Three times in a year all your males shall appear before the LORD your God in the place which He chooses, at the Feast of Unleavened Bread and at the Feast of Weeks and at the Feast of Booths, and they shall not appear before the LORD empty-handed. (NASB ©1995)