The 3 most important days in the history of the world are the 3 days of the first Easter weekend and 4 events that happened to one person:

3 days: Friday, Saturday, Sunday
4 events: died, buried, raised, appeared
1 person: Christ

“For what I received I passed on to you as of first importance: that CHRIST DIED for our sins according to the Scriptures, that he was BURIED, that he was RAISED on the third day according to the Scriptures, and that he APPEARED to Cephas, and then to the Twelve…”
1 Corinthians 15:3-5 NIV

Happy Easter