(Exodus 15:26) "And He said: If pay heed, you shall pay heed": From here it was derived: If a man paid heed to one mitzvah, he is caused to pay heed to many mitzvot (commandments)h, it being written "If pay heed, you shall pay heed." If a man forgot one mitzvah, he is caused to forget many mitzvoth, viz. (Devarim 8:19) "If forget, you shall forget." "to the voice of the L–rd": This refers to the Ten Commandments, which were from Mouth to mouth through the medium of "voices." "and you do what is just in His eyes": These are select aggadoth, which are "heard" in the ears of all men. "and you give ear to His mitzvoth"—Mishnayoth. "and you keep all His statutes"—halachoth. "all of the illness which I placed in Egypt I will not place upon you." But if I do place it upon you—"for I am the L–rd who heals you." These are the words of R. Yehoshua.