Vipāka: The ripening of deeds
Vipāka is fruit grown from what was done. Seventy years of indignation came up like a crop from seed buried long before, and a harvest takes as long as it takes to come in. Counting out the years is a way of asking how much of that fruit is left on the branch, which is a different question from asking why it grew.
Khanti: Patient endurance
Khanti is the strength to bear what cannot yet be altered. Seventy years outruns most of the lives that began them, so the ones waiting now are largely children of the ones first punished, holding on through weather they did not make. Endurance here looks like staying near the broken wall and continuing to ask, when leaving Judah behind for good would be easier.
Saṃvega: The urgency stirred by suffering
Saṃvega, the jolt that turns seeing into asking, is what breaks the silence in this night vision. Riders have just come back from patrolling the earth and reported that everything sits quiet and at rest, and it is that calm, with Jerusalem still in rubble, that pulls the cry loose. Comfort everywhere else sharpens the question, and "how long" is the sound of a heart unwilling to grow used to ruin.
Karuṇā: Compassion
Karuṇā is the heart's shaking at another's pain. The angel asks nothing for themselves; the whole prayer is spent on one city and the small towns scattered around it, the places where ordinary people are still living in the wreckage. Standing among the myrtle trees between the afflicted and the throne, they do the plain work of compassion, which is to speak for those too worn down to speak.
Anicca: Impermanence
Anicca is the mark on everything that arises: it passes. Indignation with a number fixed to it is indignation already running out, and seventy is a number. The ruined cities stand under the same law as the empire that ruined them, so the question carries its own answer: seventy years of this have been ending the whole time.