Contradiction with Matthew 5:16
This verse encourages believers to show their good works openly, whereas John 15:27 emphasizes bearing witness because they have been with Jesus from the beginning, focusing on the personal testimony rather than public displays.
Matthew 5:16: Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven.
Contradiction with Matthew 10:5-6
These verses instruct the disciples to avoid Gentile regions and focus on the lost sheep of Israel, while John 15:27 implies a witnessing mission that includes broader testimony.
Matthew 10:5-6: These twelve Jesus sent forth, and commanded them, saying, Go not into the way of the Gentiles, and into [any] city of the Samaritans enter ye not:
Contradiction with John 8:14
Jesus claims His testimony is valid even without others, whereas John 15:27 suggests the need for the disciples to bear witness because of their long-standing presence.
John 8:14: Jesus answered and said unto them, Though I bear record of myself, [yet] my record is true: for I know whence I came, and whither I go; but ye cannot tell whence I come, and whither I go.
Contradiction with Mark 16:15
This verse commands disciples to preach to every creature, while John 15:27 focuses on their qualification due to their historical presence with Jesus.
Mark 16:15: And he said unto them, Go ye into all the world, and preach the gospel to every creature.
Contradiction with 1 Corinthians 2:1-2
Paul explains he did not come with eloquence or superior wisdom, contrasting with the implication in John 15:27 that firsthand experience (being with Jesus from the beginning) is the basis for testimony.
1 Corinthians 2:1-2: And I, brethren, when I came to you, came not with excellency of speech or of wisdom, declaring unto you the testimony of God.