This is, to speak properly, the spiritual passover of the soul, the passing over of all the passions and of every object of the outward senses to the tenth, which is the proper object of the intellect, and which is divine.
For it is said in the scripture: "On the tenth day of this month let each of them take a sheep according to his house; " Exodus xii. 3. in order that from the tenth, there may be consecrated to the tenth, that is to God, the sacrifices which have been preserved in the soul, which is illuminated in two portions out of the three, until it is entirely changed in every part, and becomes a heavenly brilliancy like a full moon, at the height of its

 Exodus x. 20. 

 Exodus xii. 3. 
 
increase at the end of the second week, and so is able not only to guard, but even to sacrifice uninjured and faultless improvements, that is to say, propitiations. For this propitiation also is established in the tenth day of the month, when the soul addresses its supplications to the tenth portion, namely to God, and has learnt, by its own sagacity and acuteness, the insignificance and nothingness of the creature, and also the excessive perfection and preeminent excellence in all good things of the uncreated God.
Therefore God becomes at once propitious, and propitious too, even without any supplications being addressed to him, to those who abase and humble themselves, and who are not puffed up with vain arrogance and self-opinion. This is remission and deliverance, this is complete freedom of the soul, shaking off the wanderings in which it wandered, and fleeing for a secure anchorage to the one nature which cannot wander, and which rises up to return to the lot which it formerly received when it had brilliant aspirations, and when it vigorously toiled in labours which had virtuous ends for their object. For then admiring it for its exertions, the holy scripture honoured it, giving it a most especial honour, an immortal inheritance, a place namely in the imperishable race. This is what the wise Abraham supplicates for, when that which in word indeed is the land of Sodom, but in real fact is the soul made barren of all good things and blinded as to its reason, is about to be burnt up, in order that if the memorial of justice, namely the tenth Genesis xviii. 32. part be found in it, it may obtain a sort of amnesty. Therefore he begins his supplication with a prayer for pardon, connected with the number fifty, and terminates with the number ten, the lowest number for whose deliverance he can dare to entreat.
 From which consideration it appears to me to have been, that Moses, after the appointment of chiliarchs, or commanders of thousands, and of centurians, and of captains of fifties, Exodus xviii. 25. thought proper to appoint captains of ten over all, in order that if the mind was not able to be improved by means of the elder orders, it might at least be purified by these last in order.