Contradiction with Proverbs 3:5
Contradicts by emphasizing reliance on one's own understanding over teachings imparted by someone else.
Proverbs 3:5: Trust in the LORD with all thine heart; and lean not unto thine own understanding.
Contradiction with Ecclesiastes 1:18
Suggests that increased knowledge brings sorrow, conflicting with the positive guidance of the Holy Spirit mentioned in John 14:25.
Ecclesiastes 1:18: For in much wisdom [is] much grief: and he that increaseth knowledge increaseth sorrow.
Contradiction with Matthew 6:34
Advises against worrying about the future, whereas John 14:25 prepares the disciples for future events.
Matthew 6:34: Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself. Sufficient unto the day [is] the evil thereof.
Contradiction with 1 Corinthians 2:14
States that spiritual truths are foolishness to natural men, which conflicts with the understanding and teaching given in John 14:25.
1 Corinthians 2:14: But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know [them], because they are spiritually discerned.
Contradiction with James 3:1
Warns about the stricter judgment of teachers, which contrasts the implicit encouragement to teach others found in John 14:25.
James 3:1: My brethren, be not many masters, knowing that we shall receive the greater condemnation. [condemnation: or, judgment]