‘And he said to me, “Son of man, go, get you to the house of Israel and speak to them with my words. For you are not sent to a people of a strange speech and of a hard language (literally ‘deep of lip and heavy of tongue'), but to the house of Israel. Not to many peoples of a strange speech and of a hard language, whose words you cannot understand. Surely if I sent you to them they would listen to you. But the house of Israel will not listen to you, for they will not listen to me, for all the house of Israel are of a hard forehead and of a stiff heart.” '
Ezekiel is to go to the people of Israel with Yahweh's words, and the message as revealed in the scroll, but he is warned that in general they will not listen to him. There will of course always be some few who listen, but his message will not be popular with the people as a whole.
There is a strong element of sarcasm here. Theoretically his task should be easy. He is going to people who speak the same language as himself, rather than to people who speak and think differently, and whose language is very difficult to understand (for ‘deep of lip' compare Isaiah 33:19 and for ‘heavy of tongue' compare Exodus 4:10). It seemingly made his task much simpler. But in practise it will not be so. Those of another language may well have been willing to listen to his words, but Israel will not do so, because their minds and hearts are hardened. They do not want to listen to God, so they will certainly not listen to Ezekiel. Their minds are already made up. Compare Isaiah 6:9-13; Jeremiah 1:17-19.
The point here is the obstinacy and pig-headedness of Israel. Even with stumbling words others might be willing to listen. But Israel is so set in its mind and ways that no words, however clear, will be sufficient to move them or change their ideas, as they have already proved by their response to Jeremiah and the other prophets, and their reactions in the face of disasters. They just will not recognise their own folly and guilt. It is a stress on the total stubbornness of Israel.
This repetition of the ideas in chapter 2 demonstrates how hard his task is going to be. God wants Him to be forewarned and forearmed. It stresses the hardness of men's hearts when faced with truth which is unpalatable.