Exodus 12:14
14 “This day shall be for you a dmemorial day, and you shall keep it as a feast to the Lord; throughout your generations, as a statute forever, you shall keep it as a feast.
Numbers 16:40
40 to be a reminder to the people of Israel, so that ino outsider, who is not of the descendants of Aaron, should draw near to jburn incense before the Lord, lest he become like Korah and his company—kas the Lord said to him through Moses.