I first discovered this text from a choral piece I learned in high school. It is a Celtic rune of hospitality:
I saw a stranger yestere’en.You can find one version of it here.
I put food in the eating place,
drink in the drinking place,
music in the listening place.
In the name of the sacred Triune,
the stranger blessed me and my house,
my cattle and my dear ones.
And the lark said in her song,
“Often, often, often,
goes the Christ in the stranger’s guise.
Often, often, often,
goes the Christ in the stranger’s guise.”