Charles Ellicott Commentary Job 26:4

"To whom hast thou uttered words? And whose spirit came forth from thee?" — Job 26:4 (ASV)

(4) To whom. —That is, “Is it not to one who had said the same thing himself? Was it not my own breath, my own teaching, that came forth from you?” He then proceeds to show that it is not only the starry heavens that declare the glory of God, but the under world likewise, and the universe generally.