Ezekiel 3:6

3 And he said to me, Son of man, let your stomach make a meal of it and let your inside be full of this roll which I am giving you. Then I took it, and it was sweet as honey in my mouth.

4 And he said to me, Son of man, go now to the children of Israel, and say my words to them.

5 For you are not sent to a people whose talk is strange and whose language is hard, but to the children of Israel;

6 Not to a number of peoples whose talk is strange and whose language is hard and whose words are not clear to you. Truly, if I sent you to them they would give ear to you.

7 But the children of Israel will not give ear to you; for they have no mind to give ear to me: for all the children of Israel have a hard brow and a stiff heart.

8 See, I have made your face hard against their faces, and your brow hard against their brows.

9 Like a diamond harder than rock I have made your brow: have no fear of them and do not be overcome by their looks, for they are an uncontrolled people.