Both the old and new testament show us who is really in control and who is aware of the mess us humans have created on this earth. At this point in time we just carry on the work that all the prophets and apostles truth they believed in and we believe in. Jesus set the pace and we need to keep on it to be lights in the world. It was never declared easy to go against the grain, Jesus told us that.
The New Testaments give us hope of our Lord Jesus returning to the earth and setting up His reign. Darkness/evil, sin, Satan, world order & everything representing these things. Light/Good, The trinity God, truth & everything that represents this.