Meir ben Ezekiel ibn Gabbai, Avodat haKodesh — Part 1: Chelek haYichud
“ This is the meaning of "He built their measure of ten," implying that even though their measure is ten, and they have a beginning and an end, they all emanate from the One who has no end or limit. Therefore, the explanation is that they do not have an end or limit, as I explained previously. It has already been clarified that the necessity and obligation of the emanation of the Sefirot is to testify to the reality and the unity of the Master, the Singular One. If they were not unified with each other with one force, it would not be recognized that they are one force. ”
