But the seventh day is the sabbath of the LORD thy God:
Exodus 20:10
"The law does not say that you shall remember to keep the first day of
the week (which is now called Sunday), but the seventh day.
the week (which is now called Sunday), but the seventh day.
---It is not indefinite, leaving you to observe any day as a Sabbath that you may see fit ;
---but it is a certain definite day, namely, the Sabbath day ; that is, the day of the Sabbath, or rest of the Lord, which is no other than the seventh day of the week." Joseph Waggoner