TSK
Treasury of Scripture Knowledge references in WEB.
Six days shall work be done, but on the seventh day is a Sabbath of solemn rest, holy to Yahweh. Whoever does any work on the Sabbath day shall surely be put to death.
It shall be a Sabbath of solemn rest for you, and you shall deny yourselves. In the ninth day of the month at evening, from evening to evening, you shall keep your Sabbath."
'Why have we fasted,' [say they], 'and you don't see? [why] have we afflicted our soul, and you take no knowledge?' "Behold, in the day of your fast you find pleasure, and exact all your labors.