With meter 22.214.171.124.7 with refrain, it is set to the tune RESONET IN LAUDIBUS - a 14th century German carol, for which the composer is unknown.
Lyrics:Joseph dearest, Joseph mine,
Help me cradle the child divine;
God reward thee and all that’s thine
In paradise, so prays the mother Mary.
He came among us at Christmastide,
At Christmastide, in Bethlehem;
Men shall bring Him from far and wide
Love’s diadem: Jesus, Jesus,
Lo, He comes, and loves, and saves, and frees us!
Gladly, dear one, lady mine,
Help I cradle this child of thine;
God’s own light on us both shall shine
In paradise, as prays the mother Mary.