Praise to the moon, bright queen of the skies,
Jewel of the black night, the light of our eyes,
Brighter than starlight, whiter than snow,
Look down on us in the darkness below.
If well you should find us then well let us stay,
Be it seven times better when you make your way,
Be it seven times better when we greet the dawn,
So light up our way and keep us from all harm.
Give strength to the weary, give alms to the poor,
To the tainted and needy five senses restore,
Give song to our voices, give sight to our eyes,
To see the sun bow as the new moon shall rise.
Cast your eyes downwards to our dwelling place,
Three times for favour and three times for grace,
Over the dark clouds your face for to see,
To banish misfortune and keep trinity.
In the name of our lady, bright maiden of grace,
In the name of the king of the city of peace,
In the name of our saviour, who hung on the tree,
All praise to the moon, for eternity.
I think it's Trad., arr. by John Renbourn, lyrics possibly based on something in St. Francis of Assisi?
John Renbourn recorded different versions of this on Ship of Fools (1988) and Traveller's Prayer (1998). The Ship of Fools version can be heard on JR's website here (under Music, Track 2).