The terms "morning stars" and "sons of God" are biblical names for angels, who express joy when events in God's plan unfold. Not only God but also angels are thrilled when a sinner repents of his worldly ways. Prayer for forgiveness brings about joyous repentance and restoration of righteousness in a person's life.
Martin G. Collins
God originally created the earth with such perfection and beauty that the angels shouted with joy! Our Creator does all things in an organized manner and completes all His works in exquisite splendor. But the earth had somehow become formless and chaotic so that God had to refashion it before man could be created.
Richard T. Ritenbaugh
Basic Doctrines: Satan's Origin and Destiny
God approaches Job in a way calculated to chop him down to the humanity to which he belonged. How could Job possibly conclude that he was anything close to what God is! Such presumptuousness! Had Job ever created anything remotely like this earth? How could he even begin to think he was somehow God's equal? Job had a highly exaggerated opinion of himself. He had somehow managed to outgrow his humanity or had lost it on this trip to call God into condemnation!
Just as surely as there was an awesome difference between God's creation of the heavens and earth and what Job had accomplished, there was at least that much difference between God and Job spiritually.
John W. Ritenbaugh
Job, Self-Righteousness, and Humility
Other Forerunner Commentary entries containing Job 38:4: