Israel’s penitential confession and prayer for restoration (Psa 102:17, Psa 102:20), extending from Isa 63:7 to Isa 64:12.
loving-kindnesses ... praises ... mercies ... loving-kindnesses - The plurals and the repetitions imply that language is inadequate to express the full extent of God’s goodness.
us - the dispersed Jews at the time just preceding their final restoration.
house of Israel - of all ages; God was good not merely to the Jews now dispersed, but to Israel in every age of its history.