He Described Gehenna Seven Times in Matthew
Jesus used a single, specific geographic word — a real valley outside Jerusalem — as his primary image for ultimate destruction, and he said it almost exclusively in one gospel.
The word 'hell' in Jesus's speech across the four gospels (KJV) is almost entirely a translation of the Greek 'Gehenna' — and the overwhelming concentration of its use appears in Matthew. In Matthew alone, Jesus uses Gehenna-derived 'hell' in at least seven distinct sayings: Matthew 5:22 (anger that leads to hell fire), Matthew 5:29-30 (cutting off the eye or hand to avoid hell), Matthew 10:28 (fear him who can destroy both soul and body in hell), Matthew 18:9 (plucking out the eye rather than entering hell fire), and Matthew 23:15 and 23:33 (calling scribes and Pharisees children of hell and sons of hell fire). In Mark, the term appears in a cluster of three sayings in Mark 9:43-47 (hand, foot, eye causing stumbling — essentially a parallel to Matthew 18). In Luke, it appears only once: Luke 12:5, the 'fear him who hath power to cast into hell' saying. In John's gospel, Jesus never uses the word at all — not once. The pattern is striking: John, which contains the most extensive theological discourse attributed to Jesus, has no Gehenna language. Matthew, the most structurally Jewish gospel, carries nearly the entire weight of this image.
Red Letter Sources
Matthew 5:22Matthew 5:29Matthew 5:30Matthew 10:28Matthew 18:9Matthew 23:15Matthew 23:33Mark 9:43Mark 9:45Mark 9:47Luke 12:5
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.
And if thy right eye offend thee, pluck it out, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell.
And if thy right hand offend thee, cut it off, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell.
And fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell.
And if thine eye offend thee, pluck it out, and cast it from thee: it is better for thee to enter into life with one eye, rather than having two eyes to be cast into hell fire.
Woe unto you, scribes and Pharisees, hypocrites! for ye compass sea and land to make one proselyte, and when he is made, ye make him twofold more the child of hell than yourselves.
Ye serpents, ye generation of vipers, how can ye escape the damnation of hell?
And if thy hand offend thee, cut it off: it is better for thee to enter into life maimed, than having two hands to go into hell, into the fire that never shall be quenched:
And if thy foot offend thee, cut it off: it is better for thee to enter halt into life, than having two feet to be cast into hell, into the fire that never shall be quenched:
And if thine eye offend thee, pluck it out: it is better for thee to enter into the kingdom of God with one eye, than having two eyes to be cast into hell fire:
But I will forewarn you whom ye shall fear: Fear him, which after he hath killed hath power to cast into hell; yea, I say unto you, Fear him.
Evidence Notes
KJV renders Gehenna as 'hell' in all cases. John 0 uses; Luke 1 use; Mark 3 uses (clustered in one passage); Matthew 7+ uses spread across three separate discourses. Probable rather than Verified because KJV translation choices and verse-by-verse counting require manual confirmation of the exact total in Matthew; the zero-count in John is directly verifiable by reading all Johannine red-letter text.
Greek Note
γέεννα (Gehenna) — a transliteration of the Hebrew Ge-Hinnom, the Valley of Hinnom south of Jerusalem, historically associated with child sacrifice and later used as a refuse-burning site. Jesus's use of a real geographic name as an eschatological term is itself a notable linguistic choice distinct from the more abstract Hades (ᾅδης), which appears in different contexts.