Here's one of the few examples of a Christian hymn which doesn't have any mention of god or Christ in its original form

To be a pilgrim John Bunyan, Pil­grim's Prog­ress, 1684

Who would true valour see,
Let him come hither;
One here will constant be,
Come wind, come weather
There's no discouragement
Shall make him once relent
His first avowed intent
To be a pilgrim.

Whoso beset him round
With dismal stories
Do but themselves confound;
His strength the more is.
No lion can him fright,
He'll with a giant fight,
He will have a right
To be a pilgrim.

Hobgoblin nor foul fiend
Can daunt his spirit,
He knows he at the end
Shall life inherit.
Then fancies fly away,
He'll fear not what men say,
He'll labour night and day
To be a pilgrim.

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Percy Dearmer modified it in 1906 to add a more religious flavour