The hour = An hour. Put by Figure of speech Synecdoche (of the Part), App-6, for a definite and special time. now is. Because, had the nation repented, "all that the prophets had spoken" would have been fulfilled according to Act_3:21, including the resurrection foretold in Eze 37, and Isa_26:19, &c.
the Son of God. App-98. This title is associated with resurrection, as in Joh_5:27 judgment is with the Son of man.