Isaiah 7:22

7:22 From the abundance of milk they produce, he will have sour milk for his meals. Indeed, everyone left in the heart of the land will eat sour milk and honey.

Isaiah 58:13

58:13 You must observe the Sabbath

rather than doing anything you please on my holy day.

You must look forward to the Sabbath

and treat the Lord’s holy day with respect.

You must treat it with respect by refraining from your normal activities,

and by refraining from your selfish pursuits and from making business deals.