MKJV(i)
5 For you are not sent to a people of a deep lip and of a difficult language, but to the house of Israel;
6 not to many people of a deep lip and of a difficult language, whose words you cannot hear. Surely, if I had sent you to them, they would have listened 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 strong of forehead and hard of heart.
8 Behold, I have made your face strong against their faces and your forehead strong against their foreheads.
9 I have made your forehead as an adamant harder than flint. Do not be bowed down by their faces, though they are a rebellious house.