diff --git a/23-ISA/01.usfm b/23-ISA/01.usfm
index 4dc67686..5b1792f9 100644
--- a/23-ISA/01.usfm
+++ b/23-ISA/01.usfm
@@ -116,7 +116,7 @@ the fat of fatted beasts;
 \q1 "Woe to them! I will take vengeance against my adversaries, and avenge myself against my enemies;
 \q1
 \v 25 I will turn my hand against you, 
-\q1 refine away your dross, and take away all your impurities.
+\q1 refine away your dross as with lye, and take away all your dross.
 
 \s5
 \q1