Here God was about to call Moses to Mount Sinai to give him the Ten Commandments. There was something unique about this process. God gave specific instructions to Moses on how the people should consecrate themselves before him. He knew some of them would try to climb the mountain so he gave Moses instructions on who was allowed up the mountain and to what point.
Our God is a God of order; his ways are not our ways and is very precise in all that he does. If God would plan a one man meeting with Moses. How much more we his Children.
God Bless You!