With the advancement in technology I’m not sure how they develop pictures anymore, but before digital cameras and smartphones they would take the pictures from a roll, bring them in a dark room, and hang them on a line until they developed. In order for the pictures to be fully developed, they had to go in a dark room.
In our walk with God, there are things that you can only see in the dark that you would have not seen in the light. Sometimes in order to expose you to something you have never seen before, God will lead you through the dark. James says it this way “Consider it pure joy, my brothers, whenever you face trials of many kinds, because you know that the testing of your faith develops perseverance. Perseverance must finish its work so that you may be mature and complete, not lacking anything.” (James 1:2-4 NIV84) Daniel had to be thrown into the lion’s den in order to see God shut the lion’s mouths. The three Hebrew boys had to get into the fire in order to see Jesus more clearly. The disciples had to go through a storm so that they could see a side of Jesus they had never seen before. Paul and Silas had to be thrown in prison in order to see that no matter what circumstance or situation you’re in God can set you free.
So whatever you may be going through right now, know that through it you will discover something about God that you had never known before. Be confident that, just like David and Isaiah wrote, whether you’re on the mountain or in the valley, whether you’re in the fire or going through the rain; God will be with you, He’ll see you through it, and you’ll come out better than you were going in.