Ezekiel 3:4-6

Young's Literal Translation

⁴ And He saith unto me, `Son of man, go, enter in unto the house of Israel, and thou hast spoken with My words unto them.

⁵ For, not unto a people deep of lip and heavy of tongue [art] thou sent -- unto the house of Israel;

⁶ not unto many peoples, deep of lip and heavy of tongue, whose words thou dost not understand. If I had not sent thee unto them -- they, they do hearken unto thee,