Cross reference
Leviticus 23:44
44 Moses declared to the children of Israel the appointed feasts of Yahweh.
Leviticus 21:24
24 So Moses spoke to Aaron, and to his sons, and to all the children of Israel.
Leviticus 23:1-2
1 Yahweh spoke to Moses, saying,
2 "Speak to the children of Israel, and tell them, 'The set feasts of Yahweh, which you shall proclaim to be holy convocations, even these are my set feasts.
Matthew 18:20
20 For where two or three are gathered together in my name, there I am in the midst of them."