tipofthespear,
re: "May I ask why it matters?"
When asked by the scribes and Pharisees for a sign of his authority, the Messiah said that the only sign would be His entombment for three days AND three nights. If He didn't spend that time in the tomb, then He would not qualify as the Messiah. So why do you think that it is not important as to the length of time?
Do you know of any writing that was asked for in the OP?
Ok, so you are trying to "discredit" Jesus based on the "particular reading" of a specific Scripture...........I read it as it is written.....both in the KJV and the CJB, and I have no problem understanding that Jesus was in the tomb for three days and nights......it may not have been a complete 72 hour time, but do not care, nor believe anyone would try to count it down to the very second, and if Jesus was resurrected ONE OR TWO seconds early, they would then PROCLAIM: AHA! SEE! HE IS NOT THE MESSIAH!
Don't forget when Jesus spoke of destroying the Temple, and He said He would raise it in three days..........and there are other references as well. Buy yourself a KJV, or other translation, and spend some time studying...........there is much to learn...