Contradiction with Exodus 20:19
Exodus 18:5 involves Jethro meeting Moses, while Exodus 20:19 is about Israelites being afraid to speak with God and asking Moses to speak instead. The context of fear and divine interaction contradicts the hospitable encounter described in 18:5.
Exodus 20:19: And they said unto Moses, Speak thou with us, and we will hear: but let not God speak with us, lest we die.
Contradiction with Numbers 12:2
Exodus 18:5 shows a peaceful meeting, but Numbers 12:2 talks about Miriam and Aaron speaking against Moses, showing internal strife rather than peace.
Numbers 12:2: And they said, Hath the LORD indeed spoken only by Moses? hath he not spoken also by us? And the LORD heard [it].
Contradiction with Deuteronomy 1:9
Exodus 18:5 highlights a supportive visit from Jethro, but Deuteronomy 1:9 discusses Moses' declaration of how he cannot bear the people alone, showing a burden instead of support.
Deuteronomy 1:9: And I spake unto you at that time, saying, I am not able to bear you myself alone: