In the scriptures it's written in Leviticus 23:5 In the fourteenth day of the first month at even is the Lord's Passover.
Note what the book states. The Lord's Passover must be observed on the 14 day of the first month, which is the month of Abib. This month can be set by the new moon in the spring. In the 4th verse it states it must be observed in its season, any other time is wrong. Within the Roman Christian community, the bread and wine is taken every Sunday or every first Sunday. They also have changed the name of the Passover. They call it communion, sacrament or when someone's about to die they call it the last rites. When this is done it is done in vain. It must be taken when the Lord says it must be taken. Most people think the bread and the wine started when Jesus sat down with His apostles to eat the Passover. The King of Salem Melchizedek used the same tokens (bread and wine) when he met Abraham. The bread and the wine are very old. Some people call this the last supper. I find that very strange, because after the Lord's resurrection He ate with His apostles on the seaside. So that last supper statement is a myth
Jesus did not change the Passover, He changed the ordinance. Remember in Exodus the 12th chapter they took a Lamb every year, killed, and ate it. Being that Jesus represents the lamb, He wasn't going to die every Passover. He was sent to die one time for all that bring themselves under His blood. So, He used the bread and wine to replace the lamb. Notice what he says "Take, eat; this is my body." He gave us the bread and the wine to replace His body just as He replaced the lamb.
So Jesus says in Matthew 26:27 And he took the cup, and gave thanks, and gave it to them, saying, Drink ye all of it; 28 For this is my blood of the new testament, which is shed for many for the remission of sins.
Notice what the Lord says, “This is the blood of the New Testament or New covenant.” But notice something very important. He says shed for many, not for all. Why did He say many? Because, you must do the same thing they did in Egypt. If you fail to put the blood over your door post, the death angel will get you. You simply must be under the Lord's protection or under His blood. How do you get that protection? You must confess that Jesus is Lord, "repent and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost." (Acts 2:38). You must walk in the new covenant, which are the same old Ten Commandments the Lord gave the people Himself on Mount Sinai.The Lord says, "If you love Him keep His commandments. So, if you love Him so much, you should have no problem walking in His Laws. Which includes the Sabbath day on the seventh day of the week.
After the death of Jesus let’s take a look what Paul says in 1 Corinthians 11: 23 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: 24 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. 25 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. 26 For as often as ye eat this bread, and drink this cup, ye do shew the Lord's death till he come.
Notice that ye do this until the Lord come, which is the second coming of Jesus, brothers and Sisters. Also this passover is done once a year, according to the scriptures.
27 Wherefore whosoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord. 28 But let a man examine himself, and so let him eat of that bread, and drink of that cup. 29 For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord's body.
Now let's see who Jesus is to us. I Corinthians 5:7 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:
Paul says, "Purge out therefore the old leaven". In other words purge yourself of sin, and become a new lump, being unleaven. Meaning one that is not sinful, why? Christ is our Passover and he was sacrificed for us. Just like the lamb in Exodus was their sacrifice Christ is ours. Remember, it was the blood of the lamb that protected the children of Israel in Egypt, and for us it is the blood of Christ that will protect us. If you don't bring yourself under the blood, when death comes about, you will die for yourself even the second death, which is the LAKE OF FIRE.
The Passover represents the passing over of your sins, and the only way your sins will be passed over is if you bring yourself under the blood of the Lamb.