Contradiction with Matthew 10:34
This verse where Jesus says he did not come to bring peace, but a sword, contrasts with John 17:23 where unity and love are highlighted.
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 Luke 12:51
Here, Jesus speaks of bringing division, which contradicts the theme of unity and harmony in John 17:23.
Luke 12:51: Suppose ye that I am come to give peace on earth? I tell you, Nay; but rather division:
Contradiction with Matthew 7:23
Jesus rejecting those he never knew contrasts with the inclusivity and unity expressed in John 17:23.
Matthew 7:23: And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
Contradiction with Luke 14:26
The notion of hating family to follow Jesus contradicts the message of love and unity in John 17:23.
Luke 14:26: If any [man] come to me, and hate not his father, and mother, and wife, and children, and brethren, and sisters, yea, and his own life also, he cannot be my disciple.
Contradiction with 1 Corinthians 1:10
The plea for no divisions among believers can appear contradictory if viewed alongside the expectation of inevitable discord depicted in John 17:23.
1 Corinthians 1:10: 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 1 Corinthians 11:18-19
Acknowledgement of divisions within the church contrasts with the unity described in John 17:23.
1 Corinthians 11:18-19: For first of all, when ye come together in the church, I hear that there be divisions among you; and I partly believe it. [divisions: or, schisms]
Contradiction with Galatians 2:11-14
Peter's hypocrisy leading to division is in contrast to the unity depicted in John 17:23.
Galatians 2:11-14: But when Peter was come to Antioch, I withstood him to the face, because he was to be blamed.
Contradiction with Philippians 1:15-17
Preaching Christ out of rivalry contradicts the loving unity described in John 17:23.
Philippians 1:15-17: Some indeed preach Christ even of envy and strife; and some also of good will: