Kabbalah sa Mga Awit 86:10: Zohar

He to whom the Master gave a wife in order that he might generate children did after all endeavour to enrich the tree, though he did not succeed. The Holy One, therefore, knowing his good intention, has pity on him and, after first collecting His own due, and taking what the fount formerly failed to produce, permits him to start anew, and labour for himself in order to make good his deficiency. In addition it must be remembered that the man has to undergo transmigration because he is not, in any case, of great merit: since if he were so he would not have had to pass into another form and live again upon the earth, but would at once have “a place better than sons and daughters”. ‘So much, then, for the mysteries contained in this verse.