Kabbalah Library
Zohar for All, Volume 6
And He Shall Break Down the House
154) In the holy land, and all the more so in another land, the more the spirit of impurity is in those houses, the more a person can be harmed by it. Moreover, the spirit of impurity that is there calls upon its friends, the other Klipot, to be there. And even knocking on vessels (they used to knock on vessels to drive out spirits and damagers from places) does not remove the damagers from that house. This is why the text declares and says, “Woe to him who builds his house without righteousness,” for the dwellers in that house certainly say that verse, every day.
