Passage
Yea, the darkenes hideth not from thee: but the night shineth as the day: the darkenes and light are both alike.
Yea, the darkenes hideth not from thee: but the night shineth as the day: the darkenes and light are both alike.
Psalms 139:10 Yet thither shall thine hand leade me, and thy right hand holde me.
Psalms 139:11 If I say, Yet the darkenes shall hide me, euen the night shalbe light about me.
Psalms 139:12 Yea, the darkenes hideth not from thee: but the night shineth as the day: the darkenes and light are both alike.
Psalms 139:13 For thou hast possessed my reines: thou hast couered me in my mothers wombe.
Psalms 139:14 I will praise thee, for I am fearefully and wonderously made: marueilous are thy workes, and my soule knoweth it well.
The verse centers on "light", "darkenes", "hideth", "thee", "night", "shineth", and "both". It is saying that the verse draws attention to "light" and "darkenes", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 11's "If I say Yet the darkenes shall..." into verse 13's "For thou hast possessed my reines thou...", so "light" and "darkenes" 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 "darkenes" with trust shaped by these words, not by a vague optimism outside the passage.