Contradiction with Romans 3:28
John 3:25 discusses a question about purification among disciples, while Romans 3:28 emphasizes justification by faith, not works or rituals like purification.
Romans 3:28: Therefore we conclude that a man is justified by faith without the deeds of the law.
Contradiction with Galatians 5:6
This verse contradicts any importance John 3:25 might imply about rites, asserting that only faith working through love is valuable.
Galatians 5:6: For in Jesus Christ neither circumcision availeth any thing, nor uncircumcision; but faith which worketh by love.
Contradiction with Colossians 2:16-17
This passage suggests rituals and observances are a shadow of things to come, potentially contradicting any emphasis on purification rites referenced in John 3:25.
Colossians 2:16-17: Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon, or of the sabbath [days]: [in meat...: or, for eating and drinking] [respect: or, part]
Contradiction with 1 Samuel 15:22
While John 3:25 might imply importance of purification, 1 Samuel emphasizes that obedience is far better than sacrifice or rituals.
1 Samuel 15:22: And Samuel said, Hath the LORD [as great] delight in burnt offerings and sacrifices, as in obeying the voice of the LORD? Behold, to obey [is] better than sacrifice, [and] to hearken than the fat of rams.