Exodus 12:25

12:25 When you enter the land that the Lord will give to you, just as he said, you must observe this ceremony.

Exodus 13:6

13:6 For seven days you must eat bread made without yeast, and on the seventh day there is to be a festival to the Lord.

Exodus 33:21

33:21 The Lord said, “Here is a place by me; you will station yourself on a rock.