*Isa 51:9 Hebrew You slew Rahab; you pierced the dragon. Rahab is the name of a mythical sea monster that represents chaos in ancient literature. The name is used here as a poetic name for Egypt.
*Isa 51:11 Hebrew Zion.
*Isa 51:19 As in Dead Sea Scrolls and Greek, Latin, and Syriac versions; Masoretic Text reads How can I comfort you?