Exodus 12:18

In the first month, on the fourteenth day of the month at evening, you shall eat unleavened bread, [and continue] until the twenty-first day of the month at evening.

Exodus 12:15

[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.

Leviticus 23:5-8

The Lord’s Passover is on the fourteenth day of the first month at twilight.

Exodus 12:1-2

The Lord said to Moses and Aaron in the land of Egypt,

Numbers 28:16-25

‘The Lord’s Passover shall be on the fourteenth day of the first month [of each year].

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