Contradiction with 1 Kings 19:12
This verse describes God speaking in a "still small voice," which can be seen as a contrast to the proclamation of good news in Isaiah 40:9.
1 Kings 19:12: And after the earthquake a fire; [but] the LORD [was] not in the fire: and after the fire a still small voice.
Contradiction with Matthew 6:1
This verse advises against performing acts publicly for human praise, contrasting with the public declaration mentioned in Isaiah 40:9.
Matthew 6:1: Take heed that ye do not your alms before men, to be seen of them: otherwise ye have no reward of your Father which is in heaven. [alms: or, righteousness] [of your: or, with your]
Contradiction with John 7:10
This verse describes Jesus going to a feast "in secret," contrasting with the public proclamation implied in Isaiah 40:9.
John 7:10: But when his brethren were gone up, then went he also up unto the feast, not openly, but as it were in secret.
Contradiction with Mark 1:44
This verse instructs someone to say nothing to any man, which contradicts the command to proclaim in Isaiah 40:9.
Mark 1:44: And saith unto him, See thou say nothing to any man: but go thy way, shew thyself to the priest, and offer for thy cleansing those things which Moses commanded, for a testimony unto them.
Contradiction with Matthew 16:20
This verse advises the disciples to tell no one, contrasting with the encouragement to lift up the voice in Isaiah 40:9.
Matthew 16:20: Then charged he his disciples that they should tell no man that he was Jesus the Christ.