But Moses said to the LORD, “The people cannot come up Mount Sinai, for You solemnly warned us, ‘Put a boundary around the mountain and set it apart as holy.’”
Jewish Publication Society of America Version (JPS1917) - Exodus 19:23 >And Moses said unto the LORD: 'The people cannot come up to mount Sinai; for thou didst charge us, saying: Set bounds about the mount, and sanctify it.'