I feel it necessary to warn against this false teaching about when Christ died and was raised.

1 Now the Spirit expressly says that in latter times some will depart from the faith, giving heed to deceiving spirits and doctrines of demons, 2 speaking lies in hypocrisy, having their own conscience seared with a hot iron" 1 Timothy 4:1-2

Jesus could not have died on a Wednesday and been raised from the dead on a Saturday. This is a lie from the pit of hell, and here is why.

All four books of the Gospel state that Jesus died on a preparation day. This could not have been a preparation day for the Passover feast because Jesus and his disciples ate their Passover meal just before he was arrested.

It had to be Friday, the preparation day for the Shabbat, and the Gospels expressly say so.

Matthew 27:62

"Now the next day, that followed the day of the preparation, the chief priests and Pharisees came together unto Pilate,"

Mark 15:42

"Now when evening had come, because it was the Preparation Day, that is, the day before the Sabbath,"

Luke 23:54

"That day was the Preparation, and the Sabbath drew near."

John 19:42

"So there they laid Jesus, because of the Jews’ Preparation Day, for the tomb was nearby."

Furthermore, Luke 24:1-3 tells us this extremely important detail:

"1 Now on the first day of the week, very early in the morning, they, and certain other women with them, came to the tomb bringing the spices which they had prepared. 2 But they found the stone rolled away from the tomb. 3 Then they went in and did not find the body of the Lord Jesus."

It says Jesus' resurrection was on the first day of the week. The first day of the week in Hebrew culture is Sunday.

In the same chapter, Jesus appears on the road to Emmaus and the text says this in Luke 24:13:

"Now behold, two of them were traveling that same day to a village called Emmaus, which was seven miles from Jerusalem"

This conversation took place the same Sunday that Jesus was raised from the dead.

During the conversation, they said this to Jesus in Luke 24:21:

"But we were hoping that it was He who was going to redeem Israel. Indeed, besides all this, today is the third day since these things happened."

Friday, Saturday, Sunday. The third day.

People who insist that Jesus died on Wednesday and was raised on Saturday use Matthew 12:40 as justification for their belief because it says "three days and three nights" so they deny the Friday to Sunday account, however this ignores what all these verses I have quoted plainly say and makes the gospel authors out to be liars, which they are not.

Commentaries

Ellicot's Commentary for English Readers says this about the matter:

That the very difficulty presented by the prediction of “three days and three nights” as compared with the six-and-thirty hours (two nights and one day) of the actual history of the Resurrection, is against the probability of the verse having been inserted as a prophecy after the event. (3) That if we believe that our Lord had a distinct prevision of His resurrection, and foretold it, sometimes plainly and sometimes in dark sayings—and of this the Gospels leave no room for doubt (Matthew 16:21; Matthew 26:32; John 2:19)—then the history of Jonah presented an analogy which it was natural that He should notice. It does not necessarily follow that this use of the history as a prophetic symbol of the Resurrection requires us to accept it in the very letter of its details. It was enough, for the purposes of the illustration, that it was familiar and generally accepted. The purely chronological difficulty is explained by the common mode of speech among the Jews, according to which, any part of a day, though it were but a single hour, was for legal purposes considered as a whole. An instance of this mode of speech is found in 1Samuel 30:12-13, and it is possible that in the history of Jonah itself the measurement of time is to be taken with the same laxity.

and Barnes' Notes on the Bible says this:

Three days and three nights - It will be seen in the account of the resurrection of Christ that he was in the grave but two nights and a part of three days. See Matthew 18:6. This computation is, however, strictly in accordance with the Jewish mode of reckoning. If it had "not" been, the Jews would have understood it, and would have charged our Saviour as being a false prophet, for it was well known to them that he had spoken this prophecy, Matthew 27:63. Such a charge, however, was never made; and it is plain, therefore, that what was "meant" by the prediction was accomplished. It was a maxim, also, among the Jews, in computing time, that a part of a day was to be received as the whole. Many instances of this kind occur in both sacred and profane history.