Ezekiel 3:5
"For thou art not sent to a people of a strange speech and of an hard language, but to the house of Israel;"
Cross References (ranked by relevance)
Arise, go to Nineveh, that great city, and cry against it; for their wickedness is come up before me.
Thou shalt not see a fierce people, a people of a deeper speech than thou canst perceive; of a stammering tongue, that thou canst not understand.
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.
This he ordained in Joseph for a testimony, when he went out through the land of Egypt: where I heard a language that I understood not.
For with stammering lips and another tongue will he speak to this people.