God said, "Do not approach any closer! Take your sandals off your feet, for the place where you are standing is holy ground."

"When a foreigner lives with you and wants to observe the Passover to the Lord, all his males must be circumcised, and then he may approach and observe it, and he will be like one who is born in the land -- but no uncircumcised person may eat of it.

Moses alone is to approach the Lord, but the others are not to approach, and the people are not to go up with him.”