Kabbalah su Salmi 30:8

183 (107) Said the Soul - and if so, how was it made?:

184 (108) Said the Intellect - In the text it is written (Psalms 30:8) "G-d with your will you raised me up like a mighty mountain, when you hid Your face, I was afraid.", (Psalms 104:29), "When you turn your countenance they fear..."; and Moshe our teacher peace upon him already said (Deuteronomy 31:17) "...and hid my countenance from them and they will be for consumption..." And this, is because the good - the Holy One blessed is he literally makes it with his G-dly emanation of good, but the negativity is not other than the absence of his G-dly emanation and its nullification, whether minimal or substantial. For the G-dly emanation of the good comes through every rectification which is needed for the good of the object of the G-dly emanation, and if the G-dly emanation were nullified and absent entirely - this would be nullification for the object of the G-dly emanation, complete nullification, but if the G-dly emanation is not completely nullified, but if some conditions of its completeness are nullified and absent - there will be a deficiency in the object of the G-dly emanation, but not complete nullification. By way of example, the G-dly emanation of existence and life if it comes complete with all of the good preparations, then the object of the G-dly emanation will be alive and healthy; and if it were to be nullified completely - the object of this G-dly emanation would die. But if it were not completely nullified, but its preparations were absent and the conditions of its completion, this object of G-dly emanation would not die, but would be side and live a life of affliction, and this is straightforward. And it comes out, that we cannot say that the good and the negative are two G-dly emanations, like you thought, rather they are consequences of the G-dly emanation or its absence in total or in part: