Leviticus 23:2

23:2 “Speak to the Israelites and tell them, ‘These are the Lord’s appointed times which you must proclaim as holy assemblies – my appointed times:

Leviticus 23:37

23:37 “‘These are the appointed times of the Lord that you must proclaim as holy assemblies to present a gift to the Lord – burnt offering, grain offering, sacrifice, and drink offerings, each day according to its regulation,

Exodus 23:14

23:14 “Three times in the year you must make a pilgrim feast to me.