[In the celebration of the Passover in future years,] seven days you shall eat unleavened bread, but on the first day you shall remove the leaven from your houses [because it represents the spread of sin]; for whoever eats leavened bread on the first day through the seventh day, that person shall be cut off and excluded from [the atonement made for] Israel.

“For six days work may be done, but the seventh day shall be a holy day for you, a Sabbath of complete rest to the Lord; whoever does any kind of work on that day shall be put to death.