Exodus 34:27-29 New American Bible (Revised Edition) (NABRE)
Radiance of Moses’ Face. 27 Then the Lord said to Moses: Write down these words, for in accordance with these words I have made a covenant with you and with Israel. 28 So Moses was there with the Lord for forty days and forty nights, without eating any food or drinking any water, and he wrote on the tablets the words of the covenant, the ten words.
29 As Moses came down from Mount Sinai with the two tablets of the covenant in his hands, he did not know that the skin of his face had become radiant[a] while he spoke with the Lord.