Charles Ellicott Commentary Ezekiel 2:4

"And the children are impudent and stiffhearted: I do sent thee unto them; and thou shalt say unto them, Thus saith the Lord Jehovah." — Ezekiel 2:4 (ASV)

Impudent children. —Literally, as in margin, hard of face. The epithet is repeated in Ezekiel 3:7, and it is with reference to this that in Ezekiel 3:7-8 the prophet’s face is to be made strong, and his forehead harder than flint. “The Lord God” is in the original “the Lord Jehovah,” the second name taking the pointing of, and being translated “God,” because of the word “Lord” preceding.