Isaías 66
Ambrose of Milan · Comentário Patrístico (catena)
Isaías 66:12
So, then, the Holy Spirit is the river, and the abundant river, which according to the Hebrews flowed from Jesus in the lands, as we have received it prophesied by the mouth of Isaiah. This is the great river that flows always and never fails. And not only a river but also one of the copious stream and overflowing greatness, as also David said, "The stream of the river makes glad the city of God." — On the Holy Spirit 1.16.177
Isaías 66:24
If heaven and earth are renewed, how can we doubt the possibility of our renewal, for whom heaven and earth were made? If the transgressor is kept for punishment, why should not the just person be preserved for glory? If the worm of sinners does not die, how shall the flesh of the just perish? For the resurrection, as the very form of the word indicates, is this: What has fallen shall rise again, what has died shall live again. — On the Death of Satyrus 2.87