Yébîchai ceremony,—Kléjê Hatál, or Night Chant,—covering its 9 days of performance, will give a comprehensive idea of all Navaho 9 day ceremonies, which combine both religious & medical observances. The myth characters personified in this rite are termed Yébîchai, Grandfather or Paternal Gods, respectively, the God of Harvest, Fringe Mouth, & Talking God.