Jamieson, Fausset and Brown on Isaiah 5:22-23

22-23. Sixth Woe--against corrupt judges, who, "mighty" in drinking "wine" (a boast still not uncommon), if not in defending their country, obtain the means of self-indulgence by taking bribes ("reward"). The two verses are closely joined [Maurer].

mingle strong drink--not with water, but spices to make it intoxicating (Pr 9:2, 5; So 8:2).

take away the righteousness--set aside the just claims of those having a righteous cause.