Unfamiliar

He ordained it as a testimony for Joseph when he went out over the land of Egypt, where I heard an unfamiliar language:

I will lead the blind by a way they did not know; I will guide them on unfamiliar paths. I will turn darkness into light before them and rough places into level ground. These things I will do for them, and I will not forsake them.

For you are not being sent to a people of unfamiliar speech or difficult language, but to the house of Israel—

…not to the many peoples of unfamiliar speech and difficult language whose words you cannot understand. Surely if I had sent you to them, they would have listened to you.