Exodus 34:34-35

Exodus 34:34-35 AMP

But whenever Moses went in before the LORD to speak with Him, he would take off the veil until he came out. When he came out and he told the Israelites what he had been commanded [by God], the Israelites would see the face of Moses, how his skin shone [with a unique radiance]. So Moses put the veil on his face again until he went in to speak with God.

Read Exodus 34