WEB
It happened, when Moses came down from Mount Sinai with the two tablets of the testimony in Moses’ hand, when he came down from the mountain, that Moses didn’t know that the skin of his face shone by reason of his speaking with him.
YLT
And it cometh to pass, when Moses is coming down from mount Sinai (and the two tables of the testimony are in the hand of Moses in his coming down from the mount), that Moses hath not known that the skin of his face hath shone in His speaking with him,