Contradiction with Proverbs 26:6
Sending a message by someone unreliable brings trouble rather than refreshment.
Proverbs 26:6: He that sendeth a message by the hand of a fool cutteth off the feet, [and] drinketh damage. [damage: or, violence]
Contradiction with Matthew 12:36
Words are accountable and can be burdensome, unlike a faithful messenger bringing refreshment.
Matthew 12:36: But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment.
Contradiction with Proverbs 10:18
Speech used deceitfully is harmful, opposing the faithfulness praised in Proverbs 25:13.
Proverbs 10:18: He that hideth hatred [with] lying lips, and he that uttereth a slander, [is] a fool.
Contradiction with Jeremiah 9:4-5
Trusting even close associates is advised against, contrasting with the trust in a faithful messenger.
Jeremiah 9:4-5: Take ye heed every one of his neighbour, and trust ye not in any brother: for every brother will utterly supplant, and every neighbour will walk with slanders. [neighbour: or, friend]
Contradiction with James 3:6
The tongue can cause destruction, rather than bringing refreshment.
James 3:6: And the tongue [is] a fire, a world of iniquity: so is the tongue among our members, that it defileth the whole body, and setteth on fire the course of nature; and it is set on fire of hell. [course: Gr. wheel]