Leviticus 16:31
It is a Sabbath of solemn rest for you, and you shall humble yourselves; it is a permanent statute.
Leviticus 23:32
It is to be to you a Sabbath of complete rest, and you shall humble yourselves. On the ninth day of the month at evening, from evening to evening you shall keep your Sabbath.”
Isaiah 58:5
“Is a fast such as this what I have chosen, a day for a man to humble himself [with sorrow in his soul]?
Is it only to bow down his head like a reed
And to make sackcloth and ashes as a bed [pretending to have a repentant heart]?
Do you call this a fast and a day pleasing to the Lord?
Exodus 31:15
For six days work may be done, but the seventh is the Sabbath of complete rest, sacred to the Lord; whoever does work on the Sabbath day must be put to death.
Exodus 35:2
“For six days work may be done, but the seventh day shall be a holy day for you, a Sabbath of complete rest to the Lord; whoever does any kind of work on that day shall be put to death.
Leviticus 25:4
But in the seventh year there shall be a Sabbath of rest for the land, a Sabbath to the Lord; you shall not sow [seed in] your field nor prune your vineyard.
Isaiah 58:3
‘Why have we fasted,’ they say, ‘and You do not see it?
Why have we humbled ourselves and You do not notice?’
Hear this [O Israel], on the day of your fast [when you should be grieving for your sins] you find something you desire [to do],
And you force your hired servants to work [instead of stopping all work, as the law teaches].