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.”
O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh.
A good man out of the good treasure of the heart bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things.
But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment.
For by thy words thou shalt be justified, and by thy words thou shalt be condemned.
Then certain of the scribes and of the Pharisees answered, saying, Master, we would see a sign from thee.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“For God shall bring every work into judgment, with every secret thing, whether it be good, or whether it be evil.”
“In the day when God shall judge the secrets of men by Jesus Christ according to my gospel.”
“So then every one of us shall give account of himself to God.”
“For God shall bring every work into judgment, with every secret thing, whether it be good, or whether it be evil.”
“He that keepeth his mouth keepeth his life: but he that openeth wide his lips shall have destruction.”