Kabbalah sobre Isaías 28:16

And Come and behold, when the Holy One, blessed be He, wishes to illuminate the soul of a man, He crushes the body so that the soul will govern. As long as the soul is with the body, (they are equal and) the soul can not rule. After the body is crushed, the soul becomes powerful. What is the meaning of the verse, "tries the righteous" (Tehilim 11:5)? It is as is written, "a tried stone" (Isaiah 28:16); in the same way He "tries the righteous," which means that He strengthens him by this "tried stone," which is a precious cornerstone. So does He try the righteous!