'First Day' in the Bible

On the first day of Unleavened Bread, when the Passover lamb was being sacrificed, His disciples *said to Him, “Where do You want us to go and prepare for You to eat the Passover?”

Very early on the first day of the week, they *came to the tomb when the sun had risen.

[Now after He had risen early on the first day of the week, He first appeared to Mary Magdalene, from whom He had cast out seven demons.