Exodus 12:3

Then Moses called for all the elders of Israel and said to them, “Bring out and take for yourselves lambs according to your families and slaughter the Passover lamb.

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.

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

“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.