Contradiction with Exodus 12:48
This verse states that no uncircumcised person may eat the Passover, implying stricter participation conditions than 2 Chronicles 35:1.
Exodus 12:48: And when a stranger shall sojourn with thee, and will keep the passover to the LORD, let all his males be circumcised, and then let him come near and keep it; and he shall be as one that is born in the land: for no uncircumcised person shall eat thereof.
Contradiction with 2 Kings 23:22
This verse suggests that the Passover had not been kept in such a manner since the days of the judges, contradicting the preparation described in 2 Chronicles 35:1 as if it was a regular event.
2 Kings 23:22: Surely there was not holden such a passover from the days of the judges that judged Israel, nor in all the days of the kings of Israel, nor of the kings of Judah;
Contradiction with 2 Chronicles 30:2-3
This passage indicates that Hezekiah's Passover was kept in the second month due to uncleanness, which differs from Josiah's Passover being kept in the first month as described in 2 Chronicles 35:1.
2 Chronicles 30:2-3: For the king had taken counsel, and his princes, and all the congregation in Jerusalem, to keep the passover in the second month.