According to Sinclair Ferguson, the Passover celebration had 4 cups of wine. cup #1 was lifted before the beginning of the meal. Then unleavened bread, butter herbs, stewed fruit, greens and roast lamb was brought in, and the youngest person would ask the traditional question: 'Why do we eat these foods on this night?' - in reply the father would recount the Exodus and then everyone would sing Psalm 113-115. cup #2 was then passed around - and the plate of unleavened bread was lifted up, with the words 'This is the bread of affliction which our fathers ate in the land of Egypt. Let everyone who hungers come and eat; let everyone who is needy come and eat the Passover meal!' - the the head of the household would break off a piece for each person present. The bread was normally eaten in silence, but at the Last Supper Jesus spoke: 'I myself am the Passover Bread' (Ferguson) His life would be given as a substitute for His people! cup #3 after the finish of the meal was blessed and passed around. Psalms 116-118 were then sung. cup #4 close the meal.

Mark 14:26

[26] And when they had sung a hymn, they went out to the Mount of Olives. (ESV)

All this to say, Jesus celebrated the Passover meal with the disciples, but He accommodated that meal into the Lord's Supper and instituted it for all His followers

Luke 22:19–20

[19] And he took bread, and when he had given thanks, he broke it and gave it to them, saying, “This is my body, which is given for you. Do this in remembrance of me.” [20] And likewise the cup after they had eaten, saying, “This cup that is poured out for you is the new covenant in my blood. (ESV)

John 6:63–64

[63] It is the Spirit who gives life; the flesh is no help at all. The words that I have spoken to you are spirit and life. [64] But there are some of you who do not believe.” (For Jesus knew from the beginning who those were who did not believe, and who it was who would betray him.) (ESV)

According to Sinclair Ferguson, the Passover celebration had 4 cups of wine.

• Cup #1 was lifted before the beginning of the meal. Then unleavened bread, butter herbs, stewed fruit, greens and roast lamb was brought in, and the youngest person would ask the traditional question: 'Why do we eat these foods on this night?' - in reply the father would recount the Exodus and then everyone would sing Psalm 113-115.
• Cup #2 was then passed around - and the plate of unleavened bread was lifted up, with the words 'This is the bread of affliction which our fathers ate in the land of Egypt. Let everyone who hungers come and eat; let everyone who is needy come and eat the Passover meal!' - the the head of the household would break off a piece for each person present. The bread was normally eaten in silence, but at the Last Supper Jesus spoke: 'I myself am the Passover Bread' (Ferguson) His life would be given as a substitute for His people!
• Cup #3 after the finish of the meal was blessed and passed around. Psalms 116-118 were then sung.
• Cup #4 close the meal.

Mark 14:26 ESV

And when they had sung a hymn, they went out to the Mount of Olives.

All this to say, Jesus celebrated the Passover meal with the disciples, but He accommodated that meal into the Lord's Supper and instituted it for all His followers

Luke 22:19–20 ESV

¹⁹ And he took bread, and when he had given thanks, he broke it and gave it to them, saying, “This is my body, which is given for you. Do this in remembrance of me.” ²⁰ And likewise the cup after they had eaten, saying, “This cup that is poured out for you is the new covenant in my blood.

John 6:63–64 ESV

⁶³ It is the Spirit who gives life; the flesh is no help at all. The words that I have spoken to you are spirit and life. ⁶⁴ But there are some of you who do not believe.” (For Jesus knew from the beginning who those were who did not believe, and who it was who would betray him.)