'Dew' in the Bible

Drop as rain doth My doctrine; Flow as dew doth My sayings; As storms on the tender grass, And as showers on the herb,

And of Joseph he said: -- Blessed of Jehovah is his land, By precious things of the heavens, By dew, and by the deep crouching beneath,

And Israel doth tabernacle in confidence alone; The eye of Jacob is unto a land of corn and wine; Also His heavens drop down dew.