What do we learn from "Nevi'ayich"?
Ibn Ezra, Palgei Mayim: All this came to you due to your Nevi'im. They are not Nevi'ei Hashem!
What is "[Shav v']Safel"?
Rav Sadya Gaon: It is Sheker said with audacity.
Rashi: It is words without any Ta'am (reason). Ibn Ezra - it is like Shav; "ha'Ye'achel Tafel" (Iyov 6:6) is something without taste, and also "v'Lo Nasan Tiflah lEi'lokim" (ibid. 1:22).
Ri Kara: This is like "Emor El Tachi Safel v'Yipol" (Yechezkel 13:11). It is mortar without plaster mixed in; it does not stick to the wall. Today one smears it on the wall, and tomorrow torrential rain comes and makes it fall off.
Rid: It was Sheker and folly - you will have Shalom, do not worry.
What should they have revealed about your sin?
Rashi: They should have rebuked you about your ways.
Ri Kara: That your end will be bitter.
Why does it say "Lehashiv Shevusech"?
Rav Sadya Gaon: It is to return you from your regression.
Rashi: Shevusech is corruption, like "Shovevim" (Yirmeyah 31:21), "Shovev" (Yeshayah 57:17).
Ri Kara: It is to make you repent 1 , like "v'Shav Hashem Elokecha Es Shevuscha v'Richamecha" (Devarim 30:3).
Rid: And then you will not be exiled.
What are "Masa'os"?
Ibn Ezra, Rid: They are Nevu'os, like "Masa Damesek" (Yeshayah 17:1). Ri Kara - they were Shav, i.e. you will have Shalom.
What are "Maduchim"?
Rav Sadya Gaon, Rashi: They are words of enticement.
Ibn Ezra: They seduced you from the straight path.
Ri Kara: They seduced you away from Hashem's path.