Ezekiel 3:6 in the King James Version
Not to many people of a strange speech and of an hard language, whose words thou canst not understand. Surely, had I sent thee to them, they would have hearkened unto thee.
Context
5 For you are not sent to a people of a strange speech and of a hard language, but to the house of Israel—
6 not to many peoples of a strange speech and of a hard language, whose words you can’t understand. Surely, if I sent you to them, they would listen to you.
7 But the house of Israel will not listen to you, for they will not listen to me; for all the house of Israel are obstinate and hard-hearted.