Indeed it is tzaddik (a thing examined and found to be right) for HASHEM to repay with tzarah (tribulation) those who bring tzarah (tribulation) on you, And to recompense you, the ones suffering tzarah (tribulation), with revachah (relief) along with us at the Apocalypse of [Moshiach] Yehoshua Adoneinu from Shomayim with the malachim of his oz (power)