Contradiction with Deuteronomy 19:15
Deuteronomy 19:15 states that one witness is not enough to convict a person of a crime; this supports rather than contradicts John 8:17, which also holds the principle that the testimony of two or three witnesses is true.
Deuteronomy 19:15: One witness shall not rise up against a man for any iniquity, or for any sin, in any sin that he sinneth: at the mouth of two witnesses, or at the mouth of three witnesses, shall the matter be established.
Contradiction with John 5:31
John 5:31 suggests that if Jesus bears witness of Himself, His witness is not true, whereas John 8:17 supports the testimony of two witnesses, including His.
John 5:31: If I bear witness of myself, my witness is not true.
Contradiction with Romans 3:4
Romans 3:4 emphasizes God being true and every man a liar, which could contradict if the testimony of men (even two) would be regarded as true.
Romans 3:4: God forbid: yea, let God be true, but every man a liar; as it is written, That thou mightest be justified in thy sayings, and mightest overcome when thou art judged.
Contradiction with Matthew 18:16
Matthew 18:16 also aligns with John 8:17, as it reiterates the need for two or three witnesses.
Matthew 18:16: But if he will not hear [thee, then] take with thee one or two more, that in the mouth of two or three witnesses every word may be established.
Paradox #1
The verse refers to the principle of accepting the testimony of two witnesses as truth. A contradiction or inconsistency might arise when considering situations where two witnesses could provide false testimony together, leading to unjust outcomes. This idea could conflict with the belief that justice should be based on the whole truth rather than just on the number of witnesses.