Numbers 9:13
But if a man who is ceremonially clean and is not on a journey still fails to observe the Passover, he must be cut off from his people, because he did not present the LORD’s offering at its appointed time. That man will bear the consequences of his sin.

Numbers 9:2-3
“The Israelites are to observe the Passover at its appointed time. / You are to observe it at the appointed time, at twilight on the fourteenth day of this month, in accordance with its statutes and ordinances.”

Leviticus 23:5
The Passover to the LORD begins at twilight on the fourteenth day of the first month.

Deuteronomy 16:1-8
Observe the month of Abib and celebrate the Passover to the LORD your God, because in the month of Abib the LORD your God brought you out of Egypt by night. / You are to offer to the LORD your God the Passover sacrifice from the herd or flock in the place the LORD will choose as a dwelling for His Name. / You must not eat leavened bread with it; for seven days you are to eat with it unleavened bread, the bread of affliction, because you left the land of Egypt in haste—so that you may remember for the rest of your life the day you left the land of Egypt. ...

2 Chronicles 30:1-5
Then Hezekiah sent word throughout all Israel and Judah, and he also wrote letters to Ephraim and Manasseh inviting them to come to the house of the LORD in Jerusalem to keep the Passover of the LORD, the God of Israel. / For the king and his officials and the whole assembly in Jerusalem had decided to keep the Passover in the second month, / since they had been unable to keep it at the regular time, because not enough priests had consecrated themselves and the people had not been gathered in Jerusalem. ...

2 Chronicles 35:1
Then Josiah kept the Passover to the LORD in Jerusalem, and the Passover lamb was slaughtered on the fourteenth day of the first month.

Joshua 5:10
On the evening of the fourteenth day of the month, while the Israelites were camped at Gilgal on the plains of Jericho, they kept the Passover.

Ezekiel 45:21
On the fourteenth day of the first month you are to observe the Passover, a feast of seven days, during which unleavened bread shall be eaten.

2 Kings 23:21-23
The king commanded all the people, “Keep the Passover of the LORD your God, as it is written in this Book of the Covenant.” / No such Passover had been observed from the days of the judges who had governed Israel through all the days of the kings of Israel and Judah. / But in the eighteenth year of Josiah’s reign, this Passover was observed to the LORD in Jerusalem.

Ezra 6:19-22
On the fourteenth day of the first month, the exiles kept the Passover. / All the priests and Levites had purified themselves and were ceremonially clean. And the Levites slaughtered the Passover lamb for all the exiles, for their priestly brothers, and for themselves. / The Israelites who had returned from exile ate it, together with all who had separated themselves from the uncleanness of the peoples of the land to seek the LORD, the God of Israel. ...

Matthew 26:17-19
On the first day of the Feast of Unleavened Bread, the disciples came to Jesus and asked, “Where do You want us to prepare for You to eat the Passover?” / He answered, “Go into the city to a certain man and tell him that the Teacher says, ‘My time is near. I will keep the Passover with My disciples at your house.’” / So the disciples did as Jesus had directed them and prepared the Passover.

Mark 14:12-16
On the first day of the Feast of Unleavened Bread, when the Passover lamb was to be sacrificed, Jesus’ disciples asked Him, “Where do You want us to prepare for You to eat the Passover?” / So He sent two of His disciples and told them, “Go into the city, and a man carrying a jug of water will meet you. Follow him, / and whichever house he enters, say to the owner, ‘The Teacher asks: Where is My guest room, where I may eat the Passover with My disciples?’ ...

Luke 22:7-13
Then came the day of Unleavened Bread on which the Passover lamb was to be sacrificed. / Jesus sent Peter and John, saying, “Go and make preparations for us to eat the Passover.” / “Where do You want us to prepare it?” they asked. ...

John 13:1
It was now just before the Passover Feast, and Jesus knew that His hour had come to leave this world and return to the Father. Having loved His own who were in the world, He loved them to the very end.

1 Corinthians 5:7-8
Get rid of the old leaven, that you may be a new unleavened batch, as you really are. For Christ, our Passover lamb, has been sacrificed. / Therefore let us keep the feast, not with the old bread, leavened with malice and wickedness, but with the unleavened bread of sincerity and of truth.