Leviticus 23:2; Leviticus 23:37

2 “Speak to the Israelites and say to them: ‘These are my appointed festivals, the appointed festivals of the LORD, which you are to proclaim as sacred assemblies.

37 (“ ‘These are the LORD’s appointed festivals, which you are to proclaim as sacred assemblies for bringing food offerings to the LORD—the burnt offerings and grain offerings, sacrifices and drink offerings required for each day.