God will not put anyone in an impossible situation

For a Christian, God is The Creator, and also Good; and also Loves each of us at least as much as good parents love their children in the best imaginable family.  

This means that God will never place anyone in an impossible situation, and God will never allow any situation to remain impossible...

As soon as a situation has become impossible, God (because The Creator) will remake it such that there a good way-out from it - a way we are intended to discover and take. 

Experienced reality mirrors this so far as I am aware; but ultimately this assumption is faith-based - rooted in my experienced understanding of the nature of God... 

Part of which is to ensure that individual people will be able (from their own resources, and taking into account their own capacity) to navigate the needful discernment

So that any exception is only apparent, in not-real - and it is up to each person "caught" in what he supposes to be an impossible situation - to recognize this as fact. 

But all the above applies only when the purpose of this mortal life is recognized as being orientated towards eternal resurrected life in Heaven - and therefore when our perspective is not bounded by the contingencies of this temporary mortal life. 

We cannot always (and never wholly) escape from the inevitability of entropy (disease, ageing, death) nor from the activities of evil. So that kind of escape (i.e from "sin") is not (not necessarily) what God intends for us. 

Yet we can always learn from such experiences, and God always intends and hopes that we will do so; learn, that is, lessons that are extremely significant and beneficial to our resurrected life to come - even when the lesson is not (as often it is) beneficial to our remaining mortal life.