Mark 9:46 repeats the exact phrase 'where their worm does not die and the fire is not quenched'—identical wording.

Mark 9:48 uses the same image of undying worm and unquenchable fire—directly parallel to Mark 9:44.

Mark 9:45 applies the unquenchable fire of 9:44 to the specific case of a foot causing sin, reinforcing the call for radical amputation.

Isaiah 66:24 is the source of Jesus' phrase—the worm and fire imagery originates from this prophecy of judgment.

Matthew 3:12 mentions unquenchable fire for the chaff—same final judgment imagery as Mark 9:44.

In Matthew 25:41, the same 'eternal fire' appears—prepared for the devil and his angels, reinforcing the destination of the unquenchable fire here.

In Matthew 25:46, 'eternal punishment' parallels the unending destruction implied by the undying worm and unquenched fire here.

In 2 Thessalonians 1:9, 'eternal destruction' echoes the same fate—separation from God's presence, consistent with the unquenchable fire here.

In Revelation 14:10, torment with fire and sulfur in God's presence mirrors the unquenched fire of judgment described here.

In Revelation 14:11, the smoke of torment rises forever—reinforcing the endless, unrelenting nature of the fire that never goes out here.

In Revelation 20:10, the devil is tormented forever in the lake of fire, matching the eternal, unquenched fire of judgment here.

In Revelation 20:15, those not in the book of life are thrown into the lake of fire—the same final, irreversible judgment as the unquenchable fire here.

In Revelation 21:8, the 'second death' is the lake of fire, paralleling the eternal destruction implied by the undying worm and unquenched fire here.