Passage
Yea, the darkness hideth not from thee; but the night shineth as the day: the darkness and the light are both alike to thee.
Yea, the darkness hideth not from thee; but the night shineth as the day: the darkness and the light are both alike to thee.
Psalms 139:10 Even there shall thy hand lead me, and thy right hand shall hold me.
Psalms 139:11 If I say, Surely the darkness shall cover me; even the night shall be light about me.
Psalms 139:12 Yea, the darkness hideth not from thee; but the night shineth as the day: the darkness and the light are both alike to thee.
Psalms 139:13 For thou hast possessed my reins: thou hast covered me in my mother’s womb.
Psalms 139:14 I will praise thee; for I am fearfully and wonderfully made: marvellous are thy works; and that my soul knoweth right well.
The verse centers on "light", "darkness", "hideth", "thee", "night", "shineth", and "both". It is saying that the contrast between light and darkness marks a real divide in how people respond to God's work.
The nearby context moves from verse 11's "If I say Surely the darkness shall..." into verse 13's "For thou hast possessed my reins thou...", so "light" and "darkness" belong inside that flow. In Psalms context, the local focus is worship, trust, the LORD's kingship, and covenant mercy.
A plain takeaway is to answer the verse's own emphasis on "light" and "darkness" with trust shaped by these words, not by a vague optimism outside the passage.