Exodus 12:6

‘Now this day will be a memorial to you, and you shall celebrate it as a feast to Yahweh; throughout your generations you are to celebrate it as a perpetual statute.

“All the congregation of Israel shall celebrate this.

Then they set out from Elim, and all the congregation of the sons of Israel came to the wilderness of Sin, which is between Elim and Sinai, on the fifteenth day of the second month after their departure from the land of Egypt.

In the third month after the sons of Israel had gone out of the land of Egypt, on this day they came into the wilderness of Sinai.

“Now, let the sons of Israel observe the Passover at its appointed time.

And they celebrated the Passover in the first month, on the fourteenth day of the month, at twilight, in the wilderness of Sinai; according to all that Yahweh had commanded Moses, so the sons of Israel did.

‘Then on the fourteenth day of the first month shall be the Passover of Yahweh.

Then Josiah celebrated the Passover to Yahweh in Jerusalem, and they slaughtered the Passover animals on the fourteenth day of the first month.

Thus the sons of Israel who were present celebrated the Passover at that time, and the Feast of Unleavened Bread seven days.

And the exiles celebrated the Passover on the fourteenth of the first month.

“Then You performed signs and wonders against Pharaoh, Against all his servants and all the people of his land; For You knew that they acted presumptuously toward them, And made a name for Yourself as it is this day.

“In the first month, on the fourteenth day of the month, you shall have the Passover, a feast of seven days; unleavened bread shall be eaten.

Now the Passover and Unleavened Bread were two days away; and the chief priests and the scribes were seeking how, after seizing Him in secret, they might kill Him;

When he had seized him, he put him in prison, delivering him to four squads of soldiers to guard him, intending after the Passover to bring him out before the people.