Rabbi Joshua ben Ḳorchah said: The feet of Moses stood on the mount, and all (his body) was in the midst of the heaven, like a tent which is spread out, and the children of men stand inside it, but their feet stand on the earth, and all of them are inside the tent; so was it with Moses, his feet stood on the mountain, and all his (body) was in the heavens, beholding and seeing everything that is in the heavens.
The Holy One, blessed be He, was speaking with him like a man who || is conversing with his companion, as it is said, "And the Lord spake unto Moses face to face" (Ex. 33:11). The Holy One, blessed be He, said to Moses: Go and sanctify the Israelites for two days, as it is said, "And the Lord said unto Moses, Go unto the people, and sanctify them to-day and to-morrow" (Ex. 19:10). What then was the sanctity of Israel in the wilderness?
There were no uncircumcised people in their midst; the manna descended from heaven for them; they drank water out of the Well; clouds of glory surrounded them. What then was the sanctity of Israel in the wilderness? It refers to their avoidance of sexual intercourse.