1. On the first day of the Feast of Unleavened Bread, the disciples came to Jesus and asked, "Where do you want us to make preparations for you to eat the Passover?"
 He replied, "Go into the city to a certain man and tell him, 'The Teacher says: My appointed time is near. I am going to celebrate the Passover with my disciples at your house.' "  So the disciples did as Jesus had directed them and prepared the Passover.
 When evening came, Jesus was reclining at the table with the Twelve.  And while they were eating, he said, "I tell you the truth, one of you will betray me."
 They were very sad and began to say to him one after the other, "Surely not I, Lord?"
 Jesus replied, "The one who has dipped his hand into the bowl with me will betray me.  The Son of Man will go just as it is written about him. But woe to that man who betrays the Son of Man! It would be better for him if he had not been born."
 Then Judas, the one who would betray him, said, "Surely not I, Rabbi?"
Jesus answered, "Yes, it is you."
 While they were eating, Jesus took bread, gave thanks and broke it, and gave it to his disciples, saying, "Take and eat; this is my body."
 Then he took the cup, gave thanks and offered it to them, saying, "Drink from it, all of you.  This is my blood of the covenant, which is poured out for many for the forgiveness of sins.  I tell you, I will not drink of this fruit of the vine from now on until that day when I drink it anew with you in my Father's kingdom."
 When they had sung a hymn, they went out to the Mount of Olives. Matthew 26:17-30 [NIV]
 In the following directives I have no praise for you, for your meetings do more harm than good.  In the first place, I hear that when you come together as a church, there are divisions among you, and to some extent I believe it.  No doubt there have to be differences among you to show which of you have God's approval.  When you come together, it is not the Lord's Supper you eat,  for as you eat, each of you goes ahead without waiting for anybody else. One remains hungry, another gets drunk.  Don't you have homes to eat and drink in? Or do you despise the church of God and humiliate those who have nothing? What shall I say to you? Shall I praise you for this? Certainly not!
 For I received from the Lord what I also passed on to you: The Lord Jesus, on the night he was betrayed, took bread,  and when he had given thanks, he broke it and said, "This is my body, which is for you; do this in remembrance of me."  In the same way, after supper he took the cup, saying, "This cup is the new covenant in my blood; do this, whenever you drink it, in remembrance of me."  For whenever you eat this bread and drink this cup, you proclaim the Lord's death until he comes.
 Therefore, whoever eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of sinning against the body and blood of the Lord.  A man ought to examine himself before he eats of the bread and drinks of the cup.  For anyone who eats and drinks without recognizing the body of the Lord eats and drinks judgment on himself.  That is why many among you are weak and sick, and a number of you have fallen asleep.  But if we judged ourselves, we would not come under judgment.  When we are judged by the Lord, we are being disciplined so that we will not be condemned with the world.
 So then, my brothers, when you come together to eat, wait for each other.  If anyone is hungry, he should eat at home, so that when you meet together it may not result in judgment.
And when I come I will give further directions. 1 Cor. 11:17-34 [NIV]
2. As Thanksgiving is a special day with certain traditions, so this was a special day for them.
3. It was often accompanied by a full meal.