The Zohar, Chapter “VaEra (And I Appeared),” Item 41: Also, the south grips to the east because the warmth in the south grips to the warmth in the east. And the east grips also to the north because its moisture grips to the moisture in the north. It turns out that south and east are tied to each other through the warmth in both; the east and north—through the moisture in them; north and west—through the cold in both; west and south through the dry in both; and all are included in one another, hanging down in one another.
If we are not building the middle line, then forces (of north and south) which are opposite one another are growing. Because they don’t come to reconciliation through the middle line, they collide and try to cancel each other. This causes an explosion. Then just like a volcano explodes in Iceland in our world, a war becomes ignited within a person or outside between people. Everything happens because these two lines, the right and the left, reached some magnitude and collided rather than united peacefully into the middle line.
People are the ones who have to perform the connection through the middle line at our level. Then peace will also come to all the previous, lower levels. We have ready the capability for us to create the middle line. If we are not building it then a short circuit occurs between the two poles and this leads to disorders on all levels: inanimate (problems with ecology), vegetative, animal, and human, or at all levels at once. This all happens because we did not reach the correct connection in the middle line.
The left and the right lines conceal a great danger when they are in direct connection with one another. If the Light and the vessel connect without the screen then the “breaking of Kelim” occurs, but only at lower levels. The Zohar says that even though North and South, East and West are opposite to one another, each of them still has a capability to complement the other. However, if we don’t provide a connection for them through the middle line, they will meet anyway, out of balance and lacking peace, like enemies….
From the 1st part of the Daily Kabbalah Lesson 4/29/10, The Zohar