The celebration of the eighth day of
the week, i.e., Sunday, because it is the day of the resurrection, instead of
the Sabbath of the Jews is particularly stressed in chapter 15, 8:
He (God) says to them (the Jews): ‘Your
new moons and your sabbaths, I cannot bear them’. Consider what he means by it:
Not the sabbaths of the present era are acceptable to me, but that which I have
appointed to mark the end of the world and to usher in the eight day, that is
the beginning of the other world. Wherefore we joyfully celebrate the eighth
day on which Jesus rose from the dead, and having manifested himself to his
disciples he ascended into heaven. (Johannes Quasten, Patrology, 4 vols.
[Westminster, Md.: Christian Classics, Inc., 1992], 1:88)