God does not bring destruction.

Job 13: 23-24   Tell me, what have I done wrong?
Show me my rebellion and my sin. 24  Why do you turn away from me?
Why do you treat me as your enemy? 

Job is wise enough to know that if God is not protecting him then he has sinned against God. Therefore He wants to know what sin he has committed that could bring this on. But what He doesn't understand is that God is not the one that is destroying him, but it is actually the devil who is attacking him. 
This same thing happens far too often today in our society. Far too many times we only look to God when times are tough, when we should be looking to him all the time, and building a strong relationship. If we spend more time sitting at the feet of Jesus, then our relationship will be stronger.
Imagine if you had a really good friend that you didn't go a day without at least talking on the phone, more than likely that friend would be there for you whenever you need them. But what if you had a friend that you only saw once a week? If you called that friend up and asked for a favor, they probably would not jump right up and come help you. They might eventually come, but not as quick as you want them to.
This same thing happens with God. If you don't spend time with Him, He won't spend time with you. I'm not saying He will abandon you, I'm just saying He won't come running the minute you call on Him. God loves us no matter what we do, but sometimes He makes us wait for His miraculous healing, so that we can come to realize that we have made a mistake and sinned against Him. 
Also, He does not come to our rescue if we do not call Him. We must have communication with God in order for Him to help us.
So when you are suffering or hurting, and you can't figure out why God is letting this happen, look in the mirror and examine yourself, you may be the chain that is holding back all of God's greatness on your life.