KJV:
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.
NASB:
You will no longer see a fierce people, A people of unintelligible speech which no one comprehends, Of a stammering tongue which no one understands.
KJV:
For thou art not sent to a people of a strange speech and of an hard language, but to the house of Israel;
NASB:
"For you are not being sent to a people of unintelligible speech or difficult language, but to the house of Israel,
KJV:
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.
NASB:
nor to many peoples of unintelligible speech or difficult language, whose words you cannot understand. But I have sent you to them who should listen to you;