Karuṇā: Compassion
Karuṇā is the heart's movement toward another's pain. Righteous going to unrighteous is its shape exactly: the one standing outside the trouble walks into it and pays for the walk. Peter is writing to people being hurt for doing good, and he points them to someone who chose that same direction on purpose.
Cāga: Giving away
Cāga is release of what is yours, up to and including your life. In the old stories the highest gift is a body, like the hare who leaps into the fire so a hungry traveler can eat. Carrying sins that were never his own all the way to death is giving of that order, where the thing handed over is the giver.
Samuccheda: Cutting off at the root
Samuccheda is the ending of something so thoroughly that it cannot grow back. "Once" carries that weight: one suffering that closes the account and needs no repeat next year, and the year after. A palm cut down to the stump sends up no new shoots, and the sacrifices that came round every season are exactly the shoots that stop.
Kāyassa bhedā: The breaking up of the body
This phrase names dying as the body simply coming apart. Put to death in the flesh is that and nothing gentler; flesh does what flesh does, and no exception was made for him. It is the same ordinary ending that waits for everyone hearing the letter read aloud.
Amata: The deathless
Amata is what dying cannot reach. Made alive in the Spirit stands on the far side of the flesh's ending, which is how it can be spoken in the same breath as being killed. The deathless was never on the body's account in the first place, so it is what remains standing once the body has finished.
Pāragamana: Going to the far shore
A raft exists for one thing, leaving this bank and reaching the other. Bringing you to God puts a ferryman on board, someone who works the oars while you sit; in the old phrase, the one who has crossed turns and takes others across. Peter's readers are still mid-river, knocked about for doing right, and the crossing is already under way.