Rāga: Sensual Passion
The hand becomes a snare because rāga, sensual passion, has already moved through the mind before the hand reaches. Rāga is the heat that turns a neutral capacity, a faculty, a gaze, an impulse, into a point of capture. Jesus has just named lust as adultery already committed in the heart: the inner fire precedes the outer act. Rāga names that fire precisely, and the verse's logic follows it outward from the mind to the hand.
Cetanā: Volition
The "right hand" in both its Hebrew root (yad) and Greek (cheir) carries the sense of the power to act, not only the limb. Cetanā is that power: the mental factor of intention that drives every deliberate action. The Buddha said, "It is volition, monks, that I call kamma." When rāga colors cetanā, every act the hand performs is an act of passion, and each one deepens the snare rather than loosening it.
Upādāna: Clinging
A snare catches because something holds. Upādāna is that holding, the mind's grip on what it desires. Craving moves first, then upādāna locks it in place, the way a hand closed around a thorn refuses to open even as it bleeds. The "member that causes you to stumble" is the outer shape of a mind that has gripped something and cannot release.
Paññā: Discernment
"It is more profitable that one member perish" is a calculation, and calculations require a kind of seeing. Paññā is the faculty that sees clearly: past the immediate pull of passion, through the weight of habit, to what an action will actually cost downstream. Without it, the snare feels like a grip on something worth holding. With it, you see that what feels like a hold is a trap. This seeing is what makes the next step possible.
Nekkhamma: Renunciation
"Cut it off and throw it away" is the movement of nekkhamma, the willingness to release what has become a chain. Nekkhamma is one of the ten perfections in the Theravāda tradition, and its image is a load set down: the deliberate putting aside of what has been driving and binding. The verse insists on throwing the cut member away, not merely setting it down. Nekkhamma has the same insistence: the release must be complete, not partial.
Vipāka: Fruit of Action
"Your whole body cast into Gehenna" is the teaching of vipāka, the fruit that corrupted volition generates. The Buddha taught that actions shaped by passion produce suffering as their result, by the inner logic of how will and consequence work rather than by any punishment imposed from outside: a seed planted through craving grows into a harvest of bondage. The verse holds one member's loss against the whole body's destruction to force a clear-eyed choice before vipāka arrives and the choosing is over.