Exodus 19:22-24

American Standard Version

²² And let the priests also, that come near to Jehovah, sanctify themselves, lest Jehovah break forth upon them. ²³ And Moses said unto Jehovah, The people cannot come up to mount Sinai: for thou didst charge us, saying, Set bounds about the mount, and sanctify it. ²⁴ And Jehovah said unto him, Go, get thee down; and thou shalt come up, thou, and Aaron with thee: but let not the priests and the people break through to come up unto Jehovah, lest he break forth upon them.