the New Testament command
Luke 22:1 (KJV)
Now the feast of unleavened bread drew nigh, which is called (the Passover).
Matthew 26:17 (KJV)
Now the first day of the feast of unleavened bread the disciples came to Jesus, saying unto him,
Where wilt thou that we prepare for thee to eat the passover?
Mark 14:12 (KJV)
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?
22And as they did eat, Jesus took bread, and blessed, and brake it, and gave to them, and said,
Take, eat: this is my body.
23And he took the cup, and when he had given thanks, he gave it to them: and they all drank of it.
24And he said unto them, This is my blood of the new testament, which is shed for many.
25 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.
Acts 12:3 (KJV)
And because he saw it pleased the Jews, he proceeded further to take Peter also.
(Then were the days of unleavened bread.)
Acts 20:6 (KJV)
And we sailed away from Philippi after (the days of unleavened bread),
and came unto them to Troas in five days; where we abode seven days.
1 Corinthians 5:7 (KJV)
Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened.
For even Christ our passover is sacrificed for us:
1 Corinthians 5:8 (KJV)
Therefore let us keep the feast, not with old leaven, neither with the leaven of malice and wickedness;
but with the unleavened bread of sincerity and truth.
Is this commanded to be done once a year at apointed time,
or anytime churches feel like it ?