Numbers 14:13-14

And Moses said to the Lord, Then it will come to the ears of the Egyptians; for by your power you took this people out from among them; And they will give the news to the people of this land: they have had word that you, Lord, are present with this people, letting yourself be seen face to face, and that your cloud is resting over them, and that you go before them in a pillar of cloud by day and in a pillar of fire by night.