Exodus 34:2

34:2 Be prepared in the morning, and go up in the morning to Mount Sinai, and station yourself for me there on the top of the mountain.

Exodus 34:4

34:4 So Moses cut out two tablets of stone like the first; early in the morning he went up to Mount Sinai, just as the Lord had commanded him, and he took in his hand the two tablets of stone.