Could you cite specific examples of this?
Donuthole:
Identified both ways here: It does not say and/or but it was still the same feast. Same in Mark
Mr 14:1 After two days was the feast of the passover, and of unleavened bread: and the chief priests and the scribes sought how they might take him by craft, and put him to death.
Introduced by the bread but showing that Passover was just a few hours away. So it is saying on the 14th when the passover was killed they would eat it along with the bread prepared on the same day (not date) of unleavened bread but in the evening when it became the 15th. Same in Mark
Mr 14:12 And the first day of unleavened bread, when they killed the passover, his disciples said unto him, Where wilt thou that we go and prepare that thou mayest eat the passover?
Luke was more explicit since he was writing to a mixed audience that did not understand the festival like the Jews did. But it is still saying the same thing. The feast (7days) of unleavened bread came, but that evening when the date would change which was also called Passover. Can you see how the sentence in introductory and time flows right through it? The lamb (also called Passover which does cause some confusion here) was only killed on the 14th just before cooking it and eating it while it was still hot. This is also why the Law allowed the continued preparation of it even if it was already Sabbath and they were running a little late. True they only needed this Lamb to start this feast but other things could be used for the remaining meals and yet the bread was consistently used for the entire festival.
Lu 22:1 Now the feast of unleavened bread drew nigh, which is called the Passover.
Lu 22:7 Then came the day of unleavened bread, when the passover must be killed.
Lu 22:8 And he sent Peter and John, saying, Go and prepare us the passover, that we may eat.
John here uses the word passover for the feast itself not the slaughter of the lamb. Jews knew such use but many others would not and yet all this is clarified in the Gospels if we pay attention.
Joh 13:1 Now before the feast of the passover, when Jesus knew that his hour was come that he should depart out of this world unto the Father, having loved his own which were in the world, he loved them unto the end.
When you look at the verses you have to visualize how time is moving forward and pay attention to where you are in its progression. Some simply cannot do that for some reason and a calendar can visualize it for them. So I provided a calendar.
Donuthole said: Reviewing those scriptures in John it seems to be referring to the lamb. When it says the religious leaders wanted to be clean to "eat the Passover', I don't see how it could mean anything other than eating the lamb.
As I said Passover came to be known by that name by then and John used it here but it still was the Festival of Unfermented bread and it did not have to include Lamb on any of the other days or times of this festival. The word used this way could trip you up but fish could be on the menu, or something else during subsequent meals of Passover yet unleavend bread was mandatory for all of them. And if they were unclean they could not eat any of the bread at all since fermented bread was also forbidden by Law during this feast. The Law prohibited the Jews from eating unfermented and fermented bread if unclean. A real problem since bread was the staple of any meal. Notice Luke 22:1. This bread (still called Passover) was eaten every day of the festivl. In fact old grain was used for the first six days and new grain was used for the 7th. Eze 45:21 In the first month, in the fourteenth day of the month, ye shall have the passover, a feast of seven days; unleavened bread shall be eaten. This is what John was talking about. Passover is not about meat. It really is about the bread there being only one sacrifice using meat involved. And the time when our Lord died is not dependent upon the time the Lambs died either. There is no scripture NONE to support the WT view as to this timing. How can you kill thousands of Lambs over a period of three to five or more hours in the afternoon and have our Lord die exactly when they did? The point was not the hour of their death but the act itself during this week of Passover. Jesus ate the very Passover Lamb that depicted his sacrifice. Did anyone miss this fact? Then our Lord fulfilled the requirements of that Passover not some imaginary timing of it that the Watchtower insists on.
Joseph
