[109] 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 [47] 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.