Yechezkel 3:6-8

Orthodox Jewish Bible

⁶ Not to amim rabbim of indecipherable language and obscure lashon whose words thou canst not understand. Surely, had I sent thee to them, they would have paid heed unto thee.

⁷ But Bais Yisroel will not pay heed unto thee; for they will not pay heed unto Me; for kol Bais Yisroel are khizkei metzach (hard-set of brow) and keshei-lev (hard-hearted).

⁸ Hinei, I have made thy face chazakim against their faces, and thy metzach chazak (forehead strong) against their metzach.