Isaiah lii.13-15

13. The Lord says See, my servant will prosper; he will be highly exalted.

14 But many were amazed when they saw him at first. Because his face was disfigured he hardly seemed human, and from his appearance, one would scarcely know he was a man.

15 But looks are deceiving, But  he will cleanse many Kings will stand speechless in his presence. And those who have never been told about him will see,  and those who have never heard  him will understand.

Compare this to Romans 15:21.