The expounders of metaphors said: They did not "find" words of Torah, which are compared to water. Where is this seen? (Isaiah 55:1) "Ho! all who thirst, go to the waters!" Because they separated from words of Torah for three days, they rebelled — wherefore the prophets and the elders instituted that they read in the Torah on Sabbath, Monday, and Thursday. How so? They read on Sabbath and pause on Sunday; they read on Monday and pause on Tuesday and Wednesday; they read on Thursday and pause on Friday (so that they do not go three consecutive days without reading Torah.)