On the Shabbat after Tisha B’Av we read the first of the seven Haftarot of consolation, known as the Sheva de’Nechemta, all of which are taken from Yeshayahu. Because this Haftarah begins with the words, “Nachamu, Nachamu Ami”, this Shabbat is known as Shabbat Nachamu. It always falls out for the Parsha of VaEtchanan.
Linear annotated translation of the Haftarah of VaEtchanan
The seven Haftarot form a progression, and this is the First Step