Jerome
Patristic
c. A.D. 347–420
“(Verse 13) And now because you have done all these works, says the Lord: and I spoke to you rising up early and speaking, and you did not hear: and I called you, and you did not answer. This, which we have set forth, is not found in the Septuagint when one rises in the morning and speaks. However, God rises in the morning, not because there is any time without dawn for Him, but so that after the rest of the night, with the strength of the body restored, the soul of man may be more lively and not occupied by pleasures and the desire for food, and may be able to hear and do what is said. Therefore, we also read this in the psalm: In the morning, you will hear my voice; in the morning, I will stand before you and see (Psalm 5:4-5). And in Isaiah: By night, or at daybreak, my spirit will rise up to you, O God: for your commandments are a light upon the earth (Isaiah 26). Therefore, Paul the apostle also calls the sons of light (Ephesians 5), and not of the night or darkness, nor of those who sleep, as the rest do, who do not perceive the commandments of God.”