Contradiction with Deuteronomy 5:24
In Deuteronomy 5:24, the people acknowledge hearing God's voice out of the fire and express they can survive this experience, contrasting Exodus 20:19, where they fear death from hearing God's voice.
Deuteronomy 5:24: And ye said, Behold, the LORD our God hath shewed us his glory and his greatness, and we have heard his voice out of the midst of the fire: we have seen this day that God doth talk with man, and he liveth.
Contradiction with Exodus 24:1
In Exodus 24:1, God invites Moses and others to come up the mountain to Him, suggesting a more direct encounter, contrary to Exodus 20:19, where the people refuse direct communication with God.
Exodus 24:1: And he said unto Moses, Come up unto the LORD, thou, and Aaron, Nadab, and Abihu, and seventy of the elders of Israel; and worship ye afar off.
Contradiction with Exodus 33:11
In Exodus 33:11, it states that God spoke to Moses face to face as a man speaks to his friend, which contrasts with the people's fear to directly hear from God in Exodus 20:19.
Exodus 33:11: And the LORD spake unto Moses face to face, as a man speaketh unto his friend. And he turned again into the camp: but his servant Joshua, the son of Nun, a young man, departed not out of the tabernacle.
Contradiction with Numbers 12:8
In Numbers 12:8, God explains He speaks to Moses mouth to mouth, clearly and not in riddles, which is in contrast to the people's expressed fear of hearing God's voice in Exodus 20:19.
Numbers 12:8: With him will I speak mouth to mouth, even apparently, and not in dark speeches; and the similitude of the LORD shall he behold: wherefore then were ye not afraid to speak against my servant Moses?
Contradiction with Deuteronomy 34:10
Deuteronomy 34:10 describes the unparalleled direct contact Moses had with God, which contrasts with people's fear in Exodus 20:19 of hearing God directly.
Deuteronomy 34:10: And there arose not a prophet since in Israel like unto Moses, whom the LORD knew face to face,