The following study is an interesting examination of theophanies. A theophany is an appearance of God. God appears in the Old Testament in different ways: as an angel of the Lord (Acts 7:30-32; Exodus 3:2; Judges 2:1), apparently in physical form (Gen. 3:8; Exodus 24:9-11), in visions and dreams (Num. 12:6-8), and in flame (Judges 13:20-21).
Gen. 17:1, "Now when Abram was ninety-nine years old, the LORD appeared to Abram and said to him, “I am God Almighty; walk before Me, and be blameless.”
Gen. 18:1, “Now the LORD appeared to him by the oaks of Mamre, while he was sitting at the tent door in the heat of the day.”
Ex. 6:2-3, “God spoke further to Moses and said to him, ‘I am the LORD; and I appeared to Abraham, Isaac, and Jacob, as God Almighty, but by My name LORD I did not make myself known to them.’”
Exodus 24:9-11, “Then Moses went up with Aaron, Nadab and Abihu, and seventy of the elders of Israel, and they saw the God of Israel; and under His feet there appeared to be a pavement of sapphire, as clear as the sky itself. Yet He did not stretch out His hand against the nobles of the sons of Israel; and they beheld God, and they ate and drank.”
Exodus 33:11, “Thus the LORD used to speak to Moses face to face, just as a man speaks to his friend…”
Num. 12:6-8, "He [God] said, “Hear now My words: If there is a prophet among you, I, the LORD, shall make Myself known to him in a vision. I shall speak with him in a dream. Not so, with My servant Moses, He is faithful in all My household; with him I speak mouth to mouth, even openly, and not in dark sayings, and he beholds the form of the LORD…”
Acts 7:2, "And he [Stephen] said, “Hear me, brethren and fathers! The God of glory appeared to our father Abraham when he was in Mesopotamia, before he lived in Haran…”
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