Contradiction with Exodus 16:35
Exodus 16:35 states that the Israelites ate manna for forty years until they reached the border of the land of Canaan, whereas Joshua 5:12 indicates that the manna ceased after they had already entered the land of Canaan.
Exodus 16:35: And the children of Israel did eat manna forty years, until they came to a land inhabited; they did eat manna, until they came unto the borders of the land of Canaan.
Contradiction with Numbers 11:9
Numbers 11:9 describes how manna appeared every night with the dew, suggesting a continuous provision, whereas Joshua 5:12 describes a cessation of manna once the Israelites consumed the old corn of the land.
Numbers 11:9: And when the dew fell upon the camp in the night, the manna fell upon it.
Contradiction with John 6:31
John 6:31 mentions, "Our fathers did eat manna in the desert; as it is written, He gave them bread from heaven to eat," suggesting a miraculous provision without mention of cessation, which contrasts with Joshua 5:12 where the manna ceases.
John 6:31: Our fathers did eat manna in the desert; as it is written, He gave them bread from heaven to eat.