What does Christ say about celebrating his birth and resurrection?
Jesus said absolutely nothing about celebrating his birth. Of course, that doesnít prohibit it; it just means it is not required.
Jesus did talk about celebrating his death, burial, and resurrection. Some people do that every week (churches of Christ, among others), some every third month, and others once a year (Jehovahís Witnesses, anyone who only attends on Easter). It would probably not be wrong to celebrate it daily. We call that celebration the Lordís Supper or the Eucharist.
And as they were eating, Jesus took bread, and blessed it, and brake it, and gave it to the disciples, and said, Take, eat; this is my body. And he took the cup, and gave thanks, and gave it to them, saying, Drink ye all of it; For this is my blood of the new testament, which is shed for many for the remission of sins. But I say unto you, I will not drink henceforth of this fruit of the vine, until that day when I drink it new with you in my Father's kingdom. (Matthew 26:26-29)
And as they did eat, Jesus took bread, and blessed, and brake it, and gave to them, and said, Take, eat: this is my body. And he took the cup, and when he had given thanks, he gave it to them: and they all drank of it. And he said unto them, This is my blood of the new testament, which is shed for many. Verily I say unto you, I will drink no more of the fruit of the vine, until that day that I drink it new in the kingdom of God. (Mark 14:22-25)
And he took the cup, and gave thanks, and said, Take this, and divide it among yourselves: For I say unto you, I will not drink of the fruit of the vine, until the kingdom of God shall come. And he took bread, and gave thanks, and brake it, and gave unto them, saying, This is my body which is given for you: this do in remembrance of me. Likewise also the cup after supper, saying, This cup is the new testament in my blood, which is shed for you. (Luke 22:17-20)
For I have received of the Lord that which also I delivered unto you, That the Lord Jesus the same night in which he was betrayed took bread: And when he had given thanks, he brake it, and said, Take, eat: this is my body, which is broken for you: this do in remembrance of me. After the same manner also he took the cup, when he had supped, saying, This cup is the new testament in my blood: this do ye, as oft as ye drink it, in remembrance of me. For as often as ye eat this bread, and drink this cup, ye do shew the Lord's death till he come. (1 Corinthians 11:23-26)
None of these passages specifically mentions the resurrection, but there is no reason to celebrate the death without the resurrection. Without the resurrection, the death of the Christ is meaningless. ďAnd if Christ be not raised, your faith is vain; ye are yet in your sins.Ē (1 Corinthians 15:17) So when we participate in the Lordís Supper we should be celebrating the resurrection as much as the death.