The opening is not found in Grimm; I have taken it from Andrews; for which an excellent parallel is given in Crane, lxxvii.
"Europa's Fairy Book"
Joseph Jacobs
We gather, from the much later and poetical picture of it in Psalm lxxvii.
"Expositions of Holy Scripture Genesis, Exodus, Leviticus and Numbers"
Alexander Maclaren
9.-Page 212, stanza lxxvii.
"The Poetical Works of Sir Edward Bulwer Lytton, Bart. M.P."
Edward Bulwer Lytton