Exodus 34:34-35

New Revised Standard Version, Anglicised Catholic Edition

³⁴ but whenever Moses went in before the Lord to speak with him, he would take the veil off, until he came out; and when he came out, and told the Israelites what he had been commanded, ³⁵ the Israelites would see the face of Moses, that the skin of his face was shining; and Moses would put the veil on his face again, until he went in to speak with him.