That’s a claim. That’s an opinion. But where is the evidence for that opinion being biblical? Where does the Bible say the resurrection (i.e. the beginning of the second creation), must be on the first creation’s holiest day? A new covenant and a new creation have been instigated where all days are holy. Should we not be open to there being a number of disconnects from the old covenant and creation, which are now obsolete and passing away
lets look at this from a calendar perspective, actually from God's calendar.
Passover takes place on the afternoon of the 14th day of God's first month
6 And ye shall keep it up until the fourteenth day of the same month: and the whole assembly of the congregation of Israel shall kill it in the evening.
just to prove it was the first month of God's year:
2This month [shall be] unto you the beginning of months: it [shall be] the first month of the year to you.
The catholic church changed Passover to easter,
God's Passover lands on different days of the week every year.
the Catholic's also ended God's command for Passover on the 14th by setting "easter" not passover, on Sunday so they could have a Friday day of death and a sunday morning resurrection.
Passover on the 14th of the First month does sometime fall on our Friday so lets see how 3 days and 3 nights works - each 12 hours. 6 X 12 = 72 hours
Friday as the sun was setting Christ was placed in the tomb, day (light) was ending so no Friday day, unless you want to count a few minutes as a 12 hour day.
Remember a God day -the light- ends at sundown so they wanted to put Christ in the tomb before the sun set and the High Sabbath began.
Friday night -- 1 night 6 PM to 6AM
Saturday day- 1 day 6AM to 6PM
Saturday night - 2nd night 6PM to 6AM
Sunday day - 2nd day 6AM to 6 PM
Sunday night - 3rd night 6PM to 6AM
Monday day - 3rd day 6AM to 6PM
1/14/31 AD Passover was on Wednesday, Sabbath resurrection
1/14/29 AD on a Sabbath, 7th day
1/14/30AD on a Wednesday
1/14/31AD on a Wednesday
1/14/32AD on a Monday
1/14/33AD on a Friday: which would cause a Monday afternoon around 6 PM resurrection
either we trust what Christ stated would be the only sign HE is the Son of God or we trust Rome.