What is "in high and low"

High \High\, n.

1. An elevated place; a superior region; a height; the sky; heaven.

2. People of rank or high station; as, high and low.

3. (Card Playing) The highest card dealt or drawn.

   High, low, jack, and the game, a game at cards; -- also called all fours, old sledge, and seven up.

   In high and low, utterly; completely; in every respect. [Obs.]
   --Chaucer.

   On high, aloft; above.

   The dayspring from on high hath visited us.
   --Luke i. 78.

   The Most High, the Supreme Being; God.