Contradiction with Exodus 4:10
Moses claims he is not eloquent, whereas Exodus 4:28 shows him effectively communicating all the words of the LORD to Aaron.
Exodus 4:10: And Moses said unto the LORD, O my Lord, I [am] not eloquent, neither heretofore, nor since thou hast spoken unto thy servant: but I [am] slow of speech, and of a slow tongue. [eloquent: Heb. a man of words] [heretofore: Heb. since yesterday, nor since the third day]
Contradiction with Exodus 3:11
Moses expresses self-doubt about his ability to lead, but Exodus 4:28 implies he confidently relays God's message to Aaron.
Exodus 3:11: And Moses said unto God, Who [am] I, that I should go unto Pharaoh, and that I should bring forth the children of Israel out of Egypt?
Contradiction with Exodus 6:12
Again, Moses doubts his speaking ability before Pharaoh, contrasting Exodus 4:28 where he conveys God's message to Aaron.
Exodus 6:12: And Moses spake before the LORD, saying, Behold, the children of Israel have not hearkened unto me; how then shall Pharaoh hear me, who [am] of uncircumcised lips?
Contradiction with Numbers 12:3
Describes Moses as very humble, yet Exodus 4:28 suggests assertiveness in sharing God's words with Aaron.
Numbers 12:3: (Now the man Moses [was] very meek, above all the men which [were] upon the face of the earth.)
Contradiction with Judges 6:15
Gideon shows hesitance and doubt, similar to Moses' earlier doubts; in Exodus 4:28, Moses seems decisive.
Judges 6:15: And he said unto him, Oh my Lord, wherewith shall I save Israel? behold, my family [is] poor in Manasseh, and I [am] the least in my father's house. [my family...: Heb. my thousand is the meanest]