John 16:33"I have told you these things so that in Me you may have peace. You will have sufferings in this world. Be courageous! I have conquered the world."
In this world, its a guarantee we will have tribulations and sufferings. It is just the projected path of mankind. However, by Gods grace, and His victory over death, we have been given victory over this world. Jesus tells us to be courageous or full of courage. He pathed the way to walk and the means to walk in His path. We only just need to recieve what He offers us and do it. This world will always be full of sufferings.