Exodus 19:21-23

Young's Literal Translation

²¹ And Jehovah saith unto Moses, `Go down, protest to the people, lest they break through unto Jehovah to see, and many of them have fallen;

²² and also the priests who are coming nigh unto Jehovah do sanctify themselves, lest Jehovah break forth on them.'

²³ And Moses saith unto Jehovah, `The people [is] unable to come up unto mount Sinai, for Thou -- Thou hast protested to us, saying, Make a border [for] the mount, then thou hast sanctified it.'