Drop down, ye heavens, from above,
and let the skies pour down righteousness.

Be not wroth very sore, O Lord,
neither remember iniquity for ever:
thy holy city is a wilderness,
Sion is a wilderness, Jerusalem a desolation:
our holy and our beautiful house,
where our fathers praised thee.

This is the first section (verse, stanza, whatever the right word is) of the Latin hymn Rorate caeli in the old Anglican translation known as "The Advent Prose." There are four sections, each preceded by "Drop down...." Here's a setting of the whole thing, composed by Richard Lloyd. The text is a little different, adding "let the earth open and bring forth a Savior" to the refrain.