Contradiction with Matthew 10:34
This verse states Jesus came to bring division rather than unity, contradicting the call for oneness in John 17:21.
Matthew 10:34: Think not that I am come to send peace on earth: I came not to send peace, but a sword.
Contradiction with 1 Corinthians 1:10-13
Paul addresses divisions among believers, which contrasts with the desired unity in John 17:21.
1 Corinthians 1:10-13: Now I beseech you, brethren, by the name of our Lord Jesus Christ, that ye all speak the same thing, and [that] there be no divisions among you; but [that] ye be perfectly joined together in the same mind and in the same judgment. [divisions: Gr. schisms]
Contradiction with 2 Corinthians 6:14
Advises against being unequally yoked with unbelievers, which can be seen as contradictory to the unity among all that John 17:21 suggests.
2 Corinthians 6:14: Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness?
Contradiction with Luke 12:51
Jesus mentions bringing division, which opposes the unity mentioned in John 17:21.
Luke 12:51: Suppose ye that I am come to give peace on earth? I tell you, Nay; but rather division:
Contradiction with Galatians 2:11-14
Illustrates a conflict between Peter and Paul, showing division among early Christians versus the unity in John 17:21.
Galatians 2:11-14: But when Peter was come to Antioch, I withstood him to the face, because he was to be blamed.