Erev Shabbat Kodesh
Parashat Devarim - Shabbat Chazon
Shabbat Chazon ("Sabbath [of] vision" שבת חזון) takes its name from the Haftarah that is read on the Shabbat immediately prior to the mournful fast of Tisha B'Av, from the words of rebuke and doom coming from Isaiah in the Book of Isaiah 1:1-27. It is also referred to as the Black Sabbath due to its status as the saddest Shabbat of the year (as opposed to the White Sabbath, Shabbat Shuvah, immediately precededing Yom Kippur). (Source)
Excerpted from the Shabbat Chazon Haftarah (Yeshayahu 1.14-17, 25 and 26)...
...And when you lift up your hands, I will turn My eyes away from you; though you pray at length, I will not listen. Your hands are stained with crime— wash yourselves clean; put your evil doings away from My sight. Cease to do evil; learn to do good. Devote yourselves to justice; aid the wronged. Uphold the rights of the orphan; defend the cause of the widow.
“Come, let us reach an understanding, —says the LORD. Be your sins like crimson, they can turn snow-white; be they red as dyed wool, they can become like fleece.”
...Zion shall be saved in the judgment; her repentant ones, in the retribution. But rebels and sinners shall all be crushed, and those who forsake the LORD shall perish.
