I have Gone over this Scripture thousands of times weighing it against the rest of the Bible. It didn't happen and doesn't fit into the truth spoken in other gospels.
Luke 23
43 And Jesus said to him, "Assuredly, I say to you, today you will be with Me in Paradise."
Here is the problem.
The wording is specific. It does not say or even imply "today you have passed from death to life" or anything of that nature. specifically "today you will be with Me in Paradise".
The Lord Jesus Christ died and the thief died.
The Lord came back to life on the third day. The Thief did not. Three regular days past.
The Lord did not die and go to heaven.
The Lord came back to Life before He ascended up into heaven alone.
If the Lord was referring to a day to the Lord being a thousand years then two thousand have already past and the saints still sleep in the dust awaiting the resurrection from the dead at Christ's return. Two thousand year days have past.
The Lord Jesus Christ was without sin and did not lie or tell tales.
The Gospels of Matthew and Mark both say that the two thieves reviled Him.
The only reasonable solution to this problem is that Luke's account is not true and the Lord did not say it. Which also would mean that the incident never happened.
John 20
17 Jesus said to her, "Do not cling to Me, for I have not yet ascended to My Father; but go to My brethren and say to them, 'I am ascending to My Father and your Father, and to My God and your God.' "
Matthew 27
44 Even the robbers who were crucified with Him reviled Him with the same thing.
Mark 15
32 Let the Christ, the King of Israel, descend now from the cross, that we may see and believe." Even those who were crucified with Him reviled Him.