The God of thy father. "Father" here is used collectively, meaning forefathers generally, a usage well known to Hebraists. (Compare Exodus 15:2, and Exodus 18:4.) The God of Abraham, etc; i.e. the God who revealed himself to Abraham, Isaac, and Jacob, and entered into covenant with them (Genesis 15:1-21; Genesis 26:2-5; Genesis 35:1-12).
The conclusion which our Blessed Lord drew from this verse (Matthew 22:32) is not directly involved in it, but depends on his minor premiss, "God is not the God of the dead, but of the living." Moses hid his face.
A natural instinctive action. So Elijah, on the same site (1 Kings 19:13) and the holy angels before God's throne in heaven (Isaiah 6:2). In the religious system of Rome, the augurs when discharging their office, and all persons when offering a sacrifice, veiled their heads.
(See Liv. 1.18; Virg. Aen. 3.405; Juv. 6.390.