Leviticus 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,
Leviticus 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 23:4
"'These are the Lord's appointed times, holy assemblies, which you must proclaim at their appointed time.
Deuteronomy 16:16-17
Three times a year all your males must appear before the Lord your God in the place he chooses for the Festival of Unleavened Bread, the Festival of Weeks, and the Festival of Temporary Shelters; and they must not appear before him empty-handed.
Ecclesiastes 3:1
For everything there is an appointed time, and an appropriate time for every activity on earth: