Following are a number of back-translations as well as a sample translation for translators of Isaiah 52:15:

• Kupsabiny: “So, he shall make many sacrifices to startle.
  Kings will stay quiet/hold the mouth because of him.
  Because they shall see things that have not been told before
  and will understand/realize things that their ears have not heard before.’” (Source: Kupsabiny Back Translation)
• Newari: “But now many nations will shocked by him.
  Because of him, kings will remain silent.
  For they will experience matters of which they had not been told,
  they will understand matters of which they had not heard.” (Source: Newari Back Translation)
• Hiligaynon: “Even the nations will-be-amazed of him. The kings could not speak because of him, for they will-see the things which have- not -been-revealed to them, and they will-understand the things which they have- not -heard.’” (Source: Hiligaynon Back Translation)