Contradiction with Genesis 15:18
Contradicts Numbers 33:8 by indicating the promised land's boundaries as extending from the river of Egypt, whereas Numbers 33:8 describes crossing the Red Sea.
Genesis 15:18: In the same day the LORD made a covenant with Abram, saying, Unto thy seed have I given this land, from the river of Egypt unto the great river, the river Euphrates:
Contradiction with Deuteronomy 1:2
Contradicts the travel time implied in Numbers 33:8 by stating it is an eleven-day journey from Horeb to Kadesh-barnea, contrasting the extensive wandering.
Deuteronomy 1:2: ([There are] eleven days' [journey] from Horeb by the way of mount Seir unto Kadeshbarnea.)
Contradiction with Exodus 16:1
Contradicts Numbers 33:8 by providing a different timeframe and location sequence for the Israelites' journey in the wilderness of Sin.
Exodus 16:1: And they took their journey from Elim, and all the congregation of the children of Israel came unto the wilderness of Sin, which [is] between Elim and Sinai, on the fifteenth day of the second month after their departing out of the land of Egypt.