Your Eschatology Shapes Your Ethics
Eschatology simply means what you think happens in the future. Ethics is the moral code you live by. It's the beliefs and principles that influence every decision you make.
How you see the future determines how you live in the present. If you believe this is all there is, you will likely live a self-centered life. If you believe this world will not last then your work won't be meaningful beyond making a pay check so you can give money to other organizations doing "eternal work." If you believe that everything will be renewed and remade, then you will believe every moment could matter for ever.
What do you believe about the future? What did Jesus believe about the future?
Your eschatology shapes your ethics.