Contradiction with Jeremiah 28:9
This verse states that a prophet is validated when their prophecy comes true, which could contradict the events following the prophecy given by the man of God in 1 Kings 13:1.
Jeremiah 28:9: The prophet which prophesieth of peace, when the word of the prophet shall come to pass, [then] shall the prophet be known, that the LORD hath truly sent him.
Contradiction with Deuteronomy 18:20
It mentions that a prophet speaking something not commanded by the Lord should die, which creates tension with the events involving the man of God from Judah in 1 Kings 13:1.
Deuteronomy 18:20: But the prophet, which shall presume to speak a word in my name, which I have not commanded him to speak, or that shall speak in the name of other gods, even that prophet shall die.
Contradiction with Amos 3:7
Suggests God reveals His plans to prophets, contrasting with the implied divine silence towards the old prophet later in 1 Kings 13.
Amos 3:7: Surely the Lord GOD will do nothing, but he revealeth his secret unto his servants the prophets.
Contradiction with Matthew 7:15
Warns against false prophets, which can contrast with the genuine prophecy initially given in 1 Kings 13:1 but with subsequent misleading events.
Matthew 7:15: Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves.
Contradiction with Numbers 23:19
This verse speaks to God's truthfulness, contrasting with the deception experienced by the man of God in the following events after 1 Kings 13:1.
Numbers 23:19: God [is] not a man, that he should lie; neither the son of man, that he should repent: hath he said, and shall he not do [it]? or hath he spoken, and shall he not make it good?