For they are impudent children and stiffhearted. I do send thee unto them; and thou shalt say unto them, Thus saith the Lord GOD.
They are impudent - literally, hard-faced (Ezekiel 3:7; Ezekiel 3:9).
Children - resumptive of "they" in Ezekiel 2:3; the "children" walk in their "fathers'" steps.
I do send thee unto them - God opposes His command to all obstacles. Duties are ours; events are God's.
Thus saith the Lord God. God opposes His name to the obstinacy of the people.