This is my favorite hymn. It's also supposedly a favorite of Joseph Smith. The lyrics are by James Montgomery, and traditional music by George Coles. It tells your standard "Man does good things for a stranger who turns out to be Jesus" story, but with more conviction. I love the second to last stanza. If sung correctly it can be quite moving. The best performance of this hymn that I have heard was by a guy in my Church who really couldn't sing too well. He was doing a talk about charity and in the middle of it starting singing this. He sung it all from heart and by the end was in tears. This was especially difficult given that he had no musical accompaniment and the length of the song.

A poor wayfaring Man of grief
Hath often crossed me on my way,
Who sued so humbly for relief
That I could never answer nay.
I had not pow'r to ask his name,
Where-to he went, or whence he came;
Yet there was something in his eye
That won my love; I knew not why.

Once, when my scanty meal was spread,
He entered; not a word he spake,
Just perishing for the want of bread.
I gave him all; he blessed it, brake,
And ate, but gave me part again.
Mine was an angel's portion then,
For while I fed with eager haste,
The crust was manna to my taste.

I spied him where a fountain burst
Clear from the rock; his strength was gone.
The heedless water mocked his thirst;
He heard it, saw it hurrying on.
I ran and raised the suff'rer up;
Thrice from the stream he drained my cup,
Dipped and returned it running o'er;
I drank and never thirsted more.

'Twas night; the floods were out; it blew
A winter hurricane aloof.
I heard his voice abroad and flew
To bid him welcome to my roof.
I warmed and clothed and cheered my guest
And laid him on my couch to rest:
Then made the earth my bed, and seemed
In Eden's garden while I dreamed.

Stript, wounded, beaten nigh to death,
I found him by the highway side.
I roused his pulse, brought back his breath,
Revived his spirit, and supplied
Wine, oil, refreshment--he was healed.
I had myself a wound concealed,
But from that hour forgot the smart,
And peace bound up my broken heart.

In prison I saw him next, condemned
To meet a traitor's doom at morn.
The tide of lying tongues I stemmed,
And honored him 'mid shame and scorn.
My friendship's utmost zeal to try,
He asked if I for him would die.
The flesh was weak; my blood ran chill,
But my free spirit cried, "I will!"

Then in a moment to my view
The stranger started from disguise.
The tokens in his hands I knew;
The Savior stood before mine eyes.
He spake, and my poor name he named,
"Of me thou hast not been ashamed.
These deeds shall thy memorial be;
Fear not, thou didst them unto me."