Exodus 33:4-6, 12-14 NIV
“When the people heard these distressing words, they began to mourn and no one put on any ornaments. For the Lord had said to Moses, “Tell the Israelites, ‘You are a stiff-necked people. If I were to go with you even for a moment, I might destroy you. Now take off your ornaments and I will decide what to do with you.’ ” So the Israelites stripped off their ornaments at Mount Horeb.
Moses said to the Lord, “You have been telling me, ‘Lead these people,’ but you have not let me know whom you will send with me. You have said, ‘I know you by name and you have found favor with me.’ If you are pleased with me, teach me your ways so I may know you and continue to find favor with you. Remember that this nation is your people.” The Lord replied, “My Presence will go with you, and I will give you rest.””
http://bible.com/111/exo.33.4-6,12-14.niv