"You therefore must be perfect, as your heavenly Father is perfect."
Matthew 5:48 ESV
"Let what you say be simply 'Yes' or 'No'; anything more than this comes from evil."
Matthew 5:37 ESV
"If your right eye causes you to sin, tear it out and throw it away. For it is better that you lose one of your members than that your whole body be thrown into hell."
Matthew 5:29 ESV
"But I say to you that everyone who is angry with his brother will be liable to judgment; whoever insults his brother will be liable to the council; and whoever says, 'You fool!' will be liable to the hell of fire."
Matthew 5:22 ESV