The time was near for the Festival of Unleavened Bread, which is called the Passover. 1
References for Luke 22:1
22.1 Ex 12.1-27.
The chief priests and the teachers of the Law were afraid of the people, and so they were trying to find a way of putting Jesus to death secretly.
Then Satan entered into Judas, called Iscariot, who was one of the twelve disciples.
So Judas went off and spoke with the chief priests and the officers of the Temple guard about how he could betray Jesus to them.
They were pleased and offered to pay him money.
Judas agreed to it and started looking for a good chance to hand Jesus over to them without the people knowing about it.
The day came during the Festival of Unleavened Bread when the lambs for the Passover meal were to be killed.
Jesus sent Peter and John with these instructions: "Go and get the Passover meal ready for us to eat."
"Where do you want us to get it ready?" they asked him.
He answered, "As you go into the city, a man carrying a jar of water will meet you. Follow him into the house that he enters,
and say to the owner of the house: "The Teacher says to you, Where is the room where my disciples and I will eat the Passover meal?'