Exodus 19:10, 15, 22
Exodus 19:10 NCV
The LORD said to Moses, “Go to the people and have them spend today and tomorrow preparing themselves. They must wash their clothes
Exodus 19:15 NCV
Then Moses said to the people, “Be ready in three days. Do not have sexual relations during this time.”
Exodus 19:22 NCV
Even the priests, who may come near me, must first prepare themselves. If they don’t, I, the LORD, will punish them.”