A more sure word of prophecy

For in six days the Lord made heaven and earth, the sea and all that in them is, and rested the seventh day: wherefore the Lord blessed the sabbath day, and hallowed it. Exodus 20:11. LHU 52.1

The weekly cycle of seven literal days, six for labor, and the seventh for rest, which has been preserved and brought down through Bible history, originated in the great facts of the first seven days. LHU 52.2

When God spake His law with an audible voice from Sinai, He introduced the Sabbath by saying, “Remember the sabbath day, to keep it holy.” He then declares definitely what shall be done on the six days, and what shall not be done on the seventh. He then, in giving the reason for thus observing the week, points them back to His example on the first seven days of time. “For in six days the Lord made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the Lord blessed the sabbath day and hallowed it.” LHU 52.3

This reason appears beautiful and forcible when we understand the record of Creation to mean literal days. The first six days of each week are given to man in which to labor, because God employed the same period of the first week in the work of creation. The seventh day God has reserved as a day of rest, in commemoration of His rest during the same period of time after He had performed the work of creation in six days. LHU 52.4