“But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, Raca, shall be in danger of the council: but whosoever shall say, Thou fool, shall be in danger of hell fire.” (Matthew 5:22, KJV)
"But what I tell you is this: Anyone who nurses anger against his brother shall be brought to judgment. If he abuses his brother he must answer for it to the court; if he sneers at him he will have to answer for it in the fires of hell." (Matthew 5:22, NEB)
“Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel. Butter and honey shall he eat, that he may know to refuse the evil, and choose the good. For before the child shall know to refuse the evil, and choose the good, the land that thou abhorrest shall be forsaken of both her kings.” (Isaiah 7:14 KJV)
"Therefor the Lord himself will give you a sign; a young woman is with child, and she will bear a son, and will call him Immanuel. By the time he has learnt to reject evil and choose good he will be eating curds and honey: before that child has leant to reject evil and choose good desolation will come upon the land before whose two kings you cower now." (Isaiah 7:14 NEB)
See what I mean?
Isaiah 7:14 is about Hezekiah, not Jesus.