Rev., much better, is decaying. Perish implies destruction: the idea is that of progressive decay.
Is renewed (ἀνακαινοῦται)
Better, is being renewed, the process of renewal going on along with the process of decay. Stanley cites a line attributed to Michael Angelo: “The more the marble wastes the more the statue grows.” Compare Euripides: “Time does not depress your spirit, but it grows young again: your body, however, is weak” (“Heraclidae,” 702, 703)
Day by day (ἡμέρᾳ καὶ ἡμέρᾳ)
Lit., by day and day. A Hebrew form of expression.