Deuteronomy 4:10; Deuteronomy 4:15

10 "Remember the day you stood before the LORD your God at Horeb, when the LORD said to me, 'Assemble the people to Me, that I may let them hear My words so they may learn to fear Me all the days they live on the earth, and that they may teach their children.'

15 "So watch yourselves carefully, since you did not see any form on the day the LORD spoke to you at Horeb from the midst of the fire,