Found it at www.kohara.ac/church/art/hymn1.txt

Morobito koe age

1. Morobito koe age yorokobi tatae yo,
   Kami no megumi kono yo ni araware,
   Dabide no mura no ibuseki umaya ni,
   Kiyoki miko wa umare tamou.

2. Morobito koe age yorokobi tatae yo,
   Ame no tobira imashi mo hirakare,
   Tsukinu megummi o mi ni obi tamaite,
   Kiyoki miko wa umare tamou.

3. Morobito koe age yorokobi tatae yo,
   Shi no osore o oiyari tamaite,
   Yoki otozure o amaneku tsutauru
   Kiyoki miko wa umare taou.