* To cause.
   It is well known that rain falls copiously in thunder storms.
   The flash is first seen, the clap is next heard, and last the
   rain descends; though in fact they all take place at the same
   time.  The lightning traverses all space in no perceivable
   succession of time.  Sound is propagated at the rate of 1,142
   feet in a second.  Rain travels still more slowly, and will be
   seen sooner or later according to the weight of the drops, and
   the distance of the cloud.  Now as water is composed of two
   elastic airs or gases, called oxygen and hydrogen, in the
   proportion of 88律of the former and 11; 3/4; of the latter in
   100; parts, the electric spark, or matter of lightning, passing
   through the atmosphere, ignites and decomposes those gases,
   which explode; and the water falls down in the form of rain.
   This explosion, as well as the rushing in of the circumambient
   air to restore the equilibrium, will account for the clap and
   peal; and thus by the lightning of thunder God causes it to
   rain on the earth.

 * on the wilderness.
  Ps 104:10-14  107:35  147:8,9  Isa 35:1,2  41:18,19  43:19,20 
  Jer 14:22  Heb 6:7,8