Fear Not, Thou Faithful Christian Flock

Fear not, thou faithful Christian flock;
God is thy shelter and thy rock;
Fear not for thy salvation.
Though fierce the foe and dark the night,
The Lord of hosts shall be thy might,
Christ thine illumination.

Arise, arise, the foe defy!
Call on the Name of God most high,
That He with might endue you.
And Christ, your everlasting Priest,
In all your conflicts shall assist,
From strength to strength renew you.

Author: Michael Altenburg

Year: 1631

Also known in German as "Fürchtet euch nicht, ihr auserwählten Kindlein". The English translation is by Catherine Winkworth (1855). Alternate attributions occasionally list it as anonymous or traditional in some hymnals, but Altenburg is the accepted original author.