Watch therefore, for ye know neither the day nor the hour wherein the Son of man cometh.@Matthew 25:13
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John M. Neale (1818-1866)

Aurelius Prudentius (348-413), Liber Cathemerinon (Ales diei nuntius); translated from Latin to English by John M. Neale in the Hymnal Noted, enlarged edition, 1854.

Wareham William Knapp, 1738 (🔊 pdf nwc).

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William Knapp (1698-1768)

The wingèd herald of the day
Proclaims the morn’s approaching ray:
And Christ the Lord our souls excites,
And so to endless life invites.

Take up thy bed, to each He cries,
Who sick or wrapped in slumber lies;
And chaste and just and sober stand
And watch: My coming is at hand.

With earnest cry, with tearful care,
Call we the Lord to hear our prayer;
While supplication, pure and deep,
Forbids each chastened heart to sleep.

Do Thou, O Christ, our slumber wake:
Do Thou the chains of darkness break;
Purge Thou our former sins away,
And in our souls new light display.

All laud to God the Father be,
All praise, eternal Son, to Thee;
All glory, as is ever meet,
To God the holy Paraclete.