Contradiction with Ezra 4:23-24
These verses describe a period when construction work in Jerusalem stopped due to opposition, which could be seen as contradicting the swift completion of the wall seen in Nehemiah 6:15.
Ezra 4:23-24: Now when the copy of king Artaxerxes' letter [was] read before Rehum, and Shimshai the scribe, and their companions, they went up in haste to Jerusalem unto the Jews, and made them to cease by force and power. [by force...: Chaldee, by arm and power]
Contradiction with Nehemiah 4:10
Suggests that there was significant discouragement and fear among the laborers, which might contradict the successful completion in 52 days as mentioned in Nehemiah 6:15.
Nehemiah 4:10: And Judah said, The strength of the bearers of burdens is decayed, and [there is] much rubbish; so that we are not able to build the wall.
Contradiction with Nehemiah 1:3
States that the walls of Jerusalem were broken down and its gates burned with fire, highlighting the extensive damage that might conflict with the notion of the wall being rebuilt so quickly.
Nehemiah 1:3: And they said unto me, The remnant that are left of the captivity there in the province [are] in great affliction and reproach: the wall of Jerusalem also [is] broken down, and the gates thereof are burned with fire.