In life, there are many things that we say are "impossible." There are things that the laws of science and logic tell us can't be done, and, as humans, we tend to follow the pattern of thought that tells us that there is a limit to what we can do with most things; however, that's not in line with what the Bible says. In Luke 1:37, the Angel Gabriel tells Mary that "Nothing will be impossible with God." (ESV) He doesn't say "Few things are impossible with God," he says "nothing."
Another place in the Bible that I would like to point out, is Mark 11:20-25. Earlier in the chapter, Jesus had cursed a fig tree, and when the disciples passed by it the following day, they noticed that it had withered to it's roots. When they asked Jesus about it he replied, “Have faith in God, truly I tell you, if anyone says to this mountain, "Go, throw yourself into the sea", and does not doubt in their heart but believes that what they say will happen, it will be done for them." Surely that must make us think, "Wow, we have more power then we could ever dream of!"
After reading this verse, one of the questions we are left with is Why can't I see such spectacular miracles happen, why can't I walk down the street every day and turn all the cars into dust?" There are three main possible answers: 1. We already do see spectacular miracles. I have heard of or seen many of these happen before, ranging from people having broken bones healed instantly to demons being driven out of people. Even things that we can't see, such as someone gaining a sense of peace that they have been craving, is a miracle, we just don't notice it. Also I expect most Christians have seen someone praying in tongues, it's actually a really common thing; and its also a miracle. So the first thing I would say is that if we actually looked around we would realize just how many miracles are actually happening! 2. We try and do miracles through our own power, not through God's. On our own, we are just as powerless as anyone else, so when hoping and praying for a miracle, remember that it must come through God's power, not ours. 3. God won't allow it to happen if he does not want it to, so if you pray for the world to explode, then you might find out the hard way that God won't answer this sort of prayer!