29 It came about when Moses was coming down from Mount Sinai (and the two tablets of the testimony were in Moses' hand as he was coming down from the mountain ), that Moses did not know that the skin of his face shone because of his speaking with Him. 30 So when Aaron and all the sons of Israel saw Moses , behold , the skin of his face shone , and they were afraid to come near him. 31 Then Moses called to them, and Aaron and all the rulers in the congregation returned to him; and Moses spoke to them. 32 Afterward all the sons of Israel came near , and he commanded them to do everything that the Lord had spoken to him on Mount Sinai . 33 When Moses had finished speaking with them, he put a veil over his face . 34 But whenever Moses went in before the Lord to speak with Him, he would take off the veil until he came out; and whenever he came out and spoke to the sons of Israel what he had been commanded , 35 the sons of Israel would see the face of Moses , that the skin of Moses' face shone . So Moses would replace the veil over his face until he went in to speak with Him.

Matthew Henry's Commentary on Exodus 34:29-35

Commentary on Exodus 34:28-35

(Read Exodus 34:28-35)

Near and spiritual communion with God improves the graces of a renewed and holy character. Serious godliness puts a lustre upon a man's countenance, such as commands esteem and affection. The vail which Moses put on, marked the obscurity of that dispensation, compared with the gospel dispensation of the New Testament. It was also an emblem of the natural vail on the hearts of men respecting spiritual things. Also the vail that was and is upon the nation of Israel, which can only be taken away by the Spirit of the Lord showing to them Christ, as the end of the law for righteousness to every one that believeth. Fear and unbelief would put the vail before us, they would hinder our free approach to the mercy-seat above. We should spread our wants, temporal and spiritual, fully before our heavenly Father; we should tell him our hinderances, struggles, trails, and temptations; we should acknowledge our offences.