God only ever wants what is best for those who are in Christ. No matter what the circumstances or how difficult things may seem, he promises it is for our good and his glory.
The Bible offers proof of this. Consider the following passage from Paul's letter to the Romans:
 What then shall we say to these things? If God is for us, who can be against us?  He who did not spare his own Son but gave him up for us all, how will he not also with him graciously give us all things? (ESV)