Read Exodus 19:23 Using Other Translations
And Moses said unto the LORD, The people cannot come up to mount Sinai: for thou chargedst us, saying, Set bounds about the mount, and sanctify it.
And Moses said to the LORD, "The people cannot come up to Mount Sinai, for you yourself warned us, saying, 'Set limits around the mountain and consecrate it.'"
“But LORD,” Moses protested, “the people cannot come up to Mount Sinai. You already warned us. You told me, ‘Mark off a boundary all around the mountain to set it apart as holy.’”