2Ch 35:1  Moreover Josiah kept a passover unto the LORD in Jerusalem: and they killed the passover on the fourteenth day of the first month. 

Christ was at the Passover in the feast day.

Joh 2:23  Now when he was in Jerusalem at the passover, in the feast day, many believed in his name, when they saw the miracles which he did. 

The Passover is in the 14th. Christ kept the Passover in the 15th. Which is the holy day. The feast of unleavened bread is also in the 15th.

Lev 23:5  In the fourteenth day of the first month at even is the LORD's passover. 
Lev 23:6  And on the fifteenth day of the same month is the feast of unleavened bread unto the LORD: seven days ye must eat unleavened bread.
Lev 23:7  In the first day ye shall have a holy convocation: ye shall do no servile work therein. 

The feast of unleavened bread is also called the Passover. This feast is eaten on the 15th. 

Luk 22:1  Now the feast of unleavened bread drew nigh, which is called the Passover. 

Mar 14:1  After two days was the feast of the passover, and of unleavened bread: and the chief priests and the scribes sought how they might take him by craft, and put him to death.

Read this carefully, Passover 14th. Feast 15th. It is extremely clear the Passover is prepared on the 14th. And eaten on the 15th. In verse 17; the feast is the feast of unleavened bread, which is also called the Passover.

Num 28:16  And in the fourteenth day of the first month is the passover of the LORD. 
Num 28:17  And in the fifteenth day of this month is the feast: seven days shall unleavened bread be eaten. 

The scriptures are clear and show that the Passover is prepared on the 14th Nisan [preparation day] and eaten on the 15th Nisan [holy day] The time of the Passover is ordained forever.

Ex. 12 v 14.  And this day shall be unto you for a memorial; and ye shall keep it a feast to the LORD throughout your generations; ye shall keep it a feast by an ordinance for ever.

The above scriptures state plainly that the Passover is to be prepared on the 14th and eaten on the 15th . The obvious question arises; did the Worldwide church of God keep the wrong day? The answer is absolutely astounding. 

By keeping the Passover, we have eternal life. Compare these two verses, to have eternal life; we must keep the correct day.

Joh 6:54  Whoso eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day. 

Exo 12:17  And ye shall observe the feast of unleavened bread; for in this selfsame day have I brought your armies out of the land of Egypt: therefore shall ye observe this day in your generations by an ordinance forever. 

The ancient Israelites were not to drink the blood.

Exo 12:7  And they shall take of the blood, and strike it on the two side posts and on the upper door post of the houses, wherein they shall eat it. 

Drinking the blood is required for eternal life.

Joh 6:53  Then Jesus said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man, and drink his blood, ye have no life in you. 

The OT Passover was to be eaten without the blood, and drinking the blood of Christ is necessary for eternal life.

At our baptism into Gods church, we receive the earnest of Gods spirit, which is the down payment of eternal life. We do not have eternal life inherent until we receive the spirit of life.

We still have to keep the Passover after our baptism, even though we do not yet have eternal life. God worked out a brilliant plan, so we could keep the Passover while not yet having eternal life. Christ changed the symbols of the Passover to where we now had to not only eat the bread signifying his body: We also had to drink the wine, signifying the drinking of his spilt blood. We have shown above that the time for eating the Passover is the 15th Nisan, which has been ordained forever. Christ changed the symbols on the 14th Nisan, which means the new testament Passover can be kept on that date, but it does not mean we have eternal life by keeping that date. On the correct night of the eating of the Passover, we kept the night to be much observed, which is actually the Old Testament Passover meal, and is eaten without blood.

Gods church in the Philadelphian era kept the new testament Passover, by partaking of the symbols of the eating of the bread and drinking of the wine, but not on the correct day of the passover.  They kept it on the same day that Christ kept His last Passover, because this was one of the reasons that Christ and the disciples kept the Passover early, so as to allow the New Testament church to keep it on the wrong date so they would not qualify for eternal life at that time.

 The Old Testament Passover meal was still kept on the correct night of the Passover under the guise of the night to be much remembered. 

When we come to the knowledge of the truth, we will keep the New Testament Passover on the 15th Nisan. 

We keep the Passover in remembrance of the death of Christ and we accept the fact that Christ died for the sins of mankind. Christ ate the Passover on the Feast day during his ministry; the Passover was eaten in the Feast day after his death. It is stated plainly in the New Testament, that the Passover is eaten in the Feast Day. Christ kept the Passover the night before his death, and introduced the New Testament symbols of his body. He did not change the date. The Passover ceremony was ordained forever. This fact is mentioned continually in the Old Testament. If Christ changed the date; then scripture would be broken.

Ex. 12 v 14.  And this day shall be unto you for a memorial; and ye shall keep it a feast to the LORD throughout your generations; ye shall keep it a feast by an ordinance for ever.

The steps of the Passover are explained in simplified form; all scriptures are available to back up the following events.

[1] God the Father instigated the Passover ceremony to be kept on the same date forever.

[2] Jesus Christ instigated the New Testament symbols of bread and wine, which are symbolic of Christ’s body and blood.

[3] God the Father has decreed that it is a requirement of eternal life that we eat the bread and wine, symbolising his body and blood, on the correct day.

[4] At our baptism, and receiving the earnest of the spirit, we eat the new testament symbols on the 14th. Nisan. We do not have eternal life inherent at this time.

[5] On the correct day of the Passover, we eat the old testament Passover meal. We do not kill a lamb on the preparation day, as we have accepted Christ’s death for the remission of sins. We eat unleavened bread at this time, but we do not drink the wine signifying Christ’s blood: as we do not have eternal life inherent at this time.

[6] When God chooses to give us the knowledge of eternal life, and we choose to accept that knowledge; we will then keep the new testament Passover on the correct night; thus signifying that we now have eternal life inherent in the form of the Holy Spirit of life.

What an amazing plan; during the time in Gods church, the Philadelphian era; we correctly kept the new testament Passover on the wrong day, and we unknowingly kept the old testament Passover meal on the correct day of the passover. This was in accordance with Gods plan, but eventually we must receive the knowledge of the truth about the Passover.

The Passover pictures the very son of the great God being cruelly put to death for the sins of mankind. Christ voluntarily died that we may live. 

Joh 3:16  For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.

The acceptance of Christ’s death to pay the penalty for our sins; is the first stage of our path to eternal life. The High and Lofty God, the great God of all creation, has decreed that the Passover ceremony be kept forever as a memorial to the sacrifice of his son. God has further decreed that we must correctly keep the Passover on the correct day as one of the requirements of our receiving eternal life.

The true knowledge of the Passover shows just how much love that God and Jesus Christ have for us undeserving human beings. Don’t neglect this beautiful knowledge.

There is no confliction in the bible, regarding the Passover. The emphasis in the old testament is on the preparing. Kept means prepared, or killed. 

Jos 5:10  And the children of Israel encamped in Gilgal, and kept the passover on the fourteenth day of the month at even in the plains of Jericho.

Every mention of the Passover in the new testament backs up the Passover being killed on the 14th. And eaten on the 15th.

‘feast’ in the following verses is not inspired. The Passover and unleavened bread are on the same day

Mat 26:2  Ye know that after two days is the feast of the passover, and the Son of man is betrayed to be crucified. 

Mar 14:1  After two days was the feast of the passover, and of unleavened bread: and the chief priests and the scribes sought how they might take him by craft, and put him to death. 

The Passover is on the feast day.

Joh 2:23  Now when he was in Jerusalem at the passover, in the feast day, many believed in his name, when they saw the miracles which he did. 

‘First’ in the following verses can mean ‘before’. Before is the correct translation, as we have seen that the Passover is prepared before unleavened bread.

Mat 26:17  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? 

Mar 14:12  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? 

‘Day’ in the next verse can mean a 24 hour day; it can also mean approx. day. Remember the Passover is ordained forever, and the Passover is to be killed before unleavened bread.

Luk 22:7  Then came the day of unleavened bread, when the passover must be killed.