Killing the Passover lamb was customary on the first day of the Festival of Unleavened Bread. The disciples asked Jesus, “Where do you want us to prepare the Passover meal for you?”
Take care of it until the fourteenth ⌞day⌟ of this month. “Then at dusk, all the assembled people from the community of Israel must slaughter their animals.
Then Moses said to the people, “Remember this day—the day when you left Egypt, the land of slavery. The Lord used his mighty hand to bring you out of there. Don’t eat anything made with yeast.
It was two days before the Passover and the Festival of Unleavened Bread. The chief priests and the experts in Moses’ Teachings were looking for some underhanded way to arrest Jesus and to kill him.