Hast thou commanded the morning since thy days; and caused the dayspring to know his place;(Job 38:12)

That it might take hold of the ends of the earth, that the wicked might be shaken out of it?(Job 38:13)

It is turned as clay to the seal; and they stand as a garment.(Job 38:14)

And from the wicked their light is withholden, and the high arm shall be broken.

Hast thou entered into the springs of the sea? or hast thou walked in the search of the depth?(Job 38:16)

Have the gates of death been opened unto thee? or hast thou seen the doors of the shadow of death?(Job 38:17)

Hast thou perceived the breadth of the earth? declare if thou knowest it all.(Job 38:18)

Other publications related to "Job 38:15":

The first duty
The importance of seeking God early in the morning as the first duty by E. M. Bounds

Even when?
The importance of having faith and seeking Gods favor in difficult situations is discussed in this article, along with a personal testimony of receiving confirmation from God.

Job 38:15 - Cross Reference

And when they came down to him, Elisha prayed unto the LORD, and said, Smite this people, I pray thee, with blindness. And he smote them with blindness according to the word of Elisha. (2 Kings 6:18)

He shall be driven from light into darkness, and chased out of the world. (Job 18:18)

The way of the wicked is as darkness: they know not at what they stumble. (Proverbs 4:19)

Therefore thus saith the Lord GOD; Behold, I am against Pharaoh king of Egypt, and will break his arms, the strong, and that which was broken; and I will cause the sword to fall out of his hand. (Ezekiel 30:22)

For the arms of the wicked shall be broken: but the LORD upholdeth the righteous. (Psalm 37:17)

They meet with darkness in the day time, and grope in the noonday as in the night. (Job 5:14)

Give glory to the LORD your God, before he cause darkness, and before your feet stumble upon the dark mountains, and, while ye look for light, he turn it into the shadow of death, and make it gross darkness. (Jeremiah 13:16)

Break thou the arm of the wicked and the evil man: seek out his wickedness till thou find none. (Psalm 10:15)

Yea, the light of the wicked shall be put out, and the spark of his fire shall not shine. (Job 18:5)

And the LORD said unto Moses, Stretch out thine hand toward heaven, that there may be darkness over the land of Egypt, even darkness which may be felt. (Exodus 10:21)

And they shall pass through it, hardly bestead and hungry: and it shall come to pass, that when they shall be hungry, they shall fret themselves, and curse their king and their God, and look upward. (Isaiah 8:21)

And said, O full of all subtilty and all mischief, thou child of the devil, thou enemy of all righteousness, wilt thou not cease to pervert the right ways of the Lord? (Acts 13:10)