Marcos 9
Young's Literal Translation
6for he was not knowing what he might say, for they were greatly afraid.
Reina-Valera 1909
6Porque no sabía lo que hablaba; que estaban espantados.
King James Version
6For he wist not what to say; for they were sore afraid.
World English Bible
6For he didn’t know what to say, for they were very afraid.