Contradiction with Numbers 11:14
Moses expresses his inability to bear the burden of the people alone, which contrasts with him departing to the camp without further support in Numbers 11:30.
Numbers 11:14: I am not able to bear all this people alone, because [it is] too heavy for me.
Contradiction with Exodus 18:18
Jethro advises Moses that he will wear himself out by doing things alone, contrasting with Moses leaving the elders without instituting their leadership in Numbers 11:30.
Exodus 18:18: Thou wilt surely wear away, both thou, and this people that [is] with thee: for this thing [is] too heavy for thee; thou art not able to perform it thyself alone. [Thou wilt...: Heb. Fading thou wilt fade]
Contradiction with Deuteronomy 1:9
Moses acknowledges he cannot carry the people alone, conflicting with him seemingly reverting to solitude in Numbers 11:30 after delegating the spirit of leadership.
Deuteronomy 1:9: And I spake unto you at that time, saying, I am not able to bear you myself alone:
Contradiction with Exodus 34:34-35
Moses' direct communication with the Israelites contrasts with Numbers 11:30, where he leaves the elders without a direct communication session.
Exodus 34:34-35: But when Moses went in before the LORD to speak with him, he took the vail off, until he came out. And he came out, and spake unto the children of Israel [that] which he was commanded.