Exodus 33:12-16

12 Moses said to Yahweh, "Behold, you tell me, 'Bring up this people:' and you haven't let me know whom you will send with me. Yet you have said, 'I know you by name, and you have also found favor in my sight.'  13 Now therefore, if I have found favor in your sight, please show me now your ways, that I may know you, so that I may find favor in your sight: and consider that this nation is your people."

14 He said, "My presence will go with you, and I will give you rest."

15 He said to him, "If your presence doesn't go with me, don't carry us up from here.  16 For how would people know that I have found favor in your sight, I and your people? Isn't it in that you go with us, so that we are separated, I and your people, from all the people who are on the surface of the earth?"