Deuteronomy 16:2-12

2 And you shall offer the passover sacrifice to the LORD your God, from the flock or the herd, at the place which the LORD will choose, to make his name dwell there.
3 You shall eat no leavened bread with it; seven days you shall eat it with unleavened bread, the bread of affliction--for you came out of the land of Egypt in hurried flight--that all the days of your life you may remember the day when you came out of the land of Egypt.
4 No leaven shall be seen with you in all your territory for seven days; nor shall any of the flesh which you sacrifice on the evening of the first day remain all night until morning.
5 You may not offer the passover sacrifice within any of your towns which the LORD your God gives you;
6 but at the place which the LORD your God will choose, to make his name dwell in it, there you shall offer the passover sacrifice, in the evening at the going down of the sun, at the time you came out of Egypt.
7 And you shall boil it and eat it at the place which the LORD your God will choose; and in the morning you shall turn and go to your tents.
8 For six days you shall eat unleavened bread; and on the seventh day there shall be a solemn assembly to the LORD your God; you shall do no work on it.
9 "You shall count seven weeks; begin to count the seven weeks from the time you first put the sickle to the standing grain.
10 Then you shall keep the feast of weeks to the LORD your God with the tribute of a freewill offering from your hand, which you shall give as the LORD your God blesses you;
11 and you shall rejoice before the LORD your God, you and your son and your daughter, your manservant and your maidservant, the Levite who is within your towns, the sojourner, the fatherless, and the widow who are among you, at the place which the LORD your God will choose, to make his name dwell there.
12 You shall remember that you were a slave in Egypt; and you shall be careful to observe these statutes.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.