Contradiction with John 14:6
Jesus says He is the only way to the Father, suggesting a more exclusive approach, contrary to the fellowship with the Father and Son mentioned in 1 John 1:3.
John 14:6: Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.
Contradiction with Matthew 7:21
Emphasizes doing the will of the Father to enter the kingdom, indicating a conditional approach to fellowship, contradicting the inclusive fellowship in 1 John 1:3.
Matthew 7:21: Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Contradiction with James 4:4
Suggests friendship with the world is enmity with God, contrasting the communal fellowship highlighted in 1 John 1:3.
James 4:4: Ye adulterers and adulteresses, know ye not that the friendship of the world is enmity with God? whosoever therefore will be a friend of the world is the enemy of God.
Contradiction with 1 Corinthians 5:11
Encourages separation from sinners within the church, conflicting with the inclusive aspect of fellowship in 1 John 1:3.
1 Corinthians 5:11: But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.