So close... but missed the whole point. Christ celebrated the traditional Passover with His Apostles on Holy Thursday. He sanctified it by changing the elements from commemorative food to his own flesh and blood as the sacrifice of the New Covenant. He then went out and lived the sacrificial offering of the Lamb in His Own Flesh on the Cross on Good Friday.
What was once symbolic of an historical event (Passover) became the once-for-all sacrifice for the redemption of all men.
Almost! He observed Passover on Passover!
He sanctified it by changing the elements from commemorative food to his own flesh and blood as the sacrifice of the New Covenant.
Passover was already sanctified by the Lord before this night (it still is).
He then went out and lived the sacrificial offering of the Lamb in His Own Flesh on the Cross on Good Friday.
Again, this was on Passover...an annual holy day commanded by Christ...
What was once symbolic of an historical event (Passover) became the once-for-all sacrifice for the redemption of all men.
Well Passover is an historical and the of Christ was redemptive and he commanded us to remember that redemptive death on Passover.
Yeshua was already in the tomb on what you call holy thursday. he was also in that tomb on friday, and he never said to worship Dagon while he was in there.