Numbers 14:5

Then Moses and Aaron fell on their faces before all the assembly of the congregation of the children of Israel.

Moses and Aaron fell on their faces - as humble and earnest suppliants, either to the people, entreating them to desist from so perverse a design, or rather to God, as the usual and only refuge from the violence of that tumultuous and stiff-necked rabble, and a hopeful means of softening and impressing their hearts.