'Windows of Heaven' in the Bible

Also the fountains of the deep and the windows of heaven were stopped, and rain from heaven was restrained.

Bring all the tithe into the storehouse, so that there may be food in My house. And test Me now with this, says Jehovah of Hosts, to see if I will not open the windows of Heaven for you, and pour out a blessing for you, until there is not enough room.