And that day was the preparation, and the sabbath drew on.
And the women also, which came with him from Galilee, followed after, and beheld the sepulcher, and how his body was laid.
And they returned, and prepared spices and ointments; and rested the sabbath day according to the commandment.
Now on the first day of the week, very early in the morning, they came to the sepulcher, bringing the spices which they had prepared, and certain others with them.
Jesus Christ rose on Sunday and according to the verses above, Sunday is the first day of the week. The day before Sunday is the Sabbath day. A week has seven days. So if the first be Sunday. Counting the Seventh will bring you to Saturday.
Sunday ... First (Day of resurrection) Monday ... Second Tuesday ... Third Wednesday ... Fourth Thursday ... Fifth Friday ... Sixth Saturday ... Seventh. ( The Sabbath)
In This day you are supposed to rest according to the Commandment
Then again there is reading of the word of God, there is praying, singing for the Lord, returning of tithes and offerings, Bible studies plus others