Contradiction with James 2:9
This verse speaks against favoritism, which may seem contradicted by singling out Rufus for honor.
James 2:9: But if ye have respect to persons, ye commit sin, and are convinced of the law as transgressors.
Contradiction with Matthew 5:47
Encourages greeting everyone, not just those close to you, which may suggest contradiction by singling out specific individuals for greetings.
Matthew 5:47: And if ye salute your brethren only, what do ye more [than others]? do not even the publicans so?
Contradiction with 1 Timothy 5:21
Calls for impartiality which might seem at odds with specifically greeting one person.
1 Timothy 5:21: I charge [thee] before God, and the Lord Jesus Christ, and the elect angels, that thou observe these things without preferring one before another, doing nothing by partiality. [preferring...: or, prejudice]
Contradiction with Galatians 1:10
Speaks against seeking approval of men, which might appear to contradict showing favor by singling someone out in a greeting.
Galatians 1:10: For do I now persuade men, or God? or do I seek to please men? for if I yet pleased men, I should not be the servant of Christ.