History of the Sabbath and First Day of the Week - John N. Andrews

epresent "each motion of the seven planets, and
the whole practical art which speeds to the end of
rest." This seems to represent the present period of
labor which is to end in the rest of the saints. For
he adds: "But after the wandering orbs (represented
by Plato's seven days) the journey leads to Heaven,
that is, to the eighth motion and day." The seven
days, therefore, do here represent the period of the
Christian's pilgrimage, and the eighth day of which
Clement here speaks is not Sunday, but Heaven
itself! Here is the first instance of Lord’s Day as a
name for the eighth day, but this eighth day is a
mystical one, and means Heaven!
But Clement uses the term Lord’s Day once
more, and this time clearly, as representing, not a
literal day, but the whole period of our regenerate
life. For he speaks of it in treating of fasting, and
he sets forth fasting as consisting in abstinence
from sinful pleasures, not only in deeds, to use his
distinction, as forbidden by the law, but in
thoughts, as forbidden by the gospel. Such fasting
pertains to the entire life of the Christian. And thus
Clement sets forth what is involved in observing
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