What did you do yesterday to build the Kingdom? What will you do today? Those two questions may be the most important you can ever ask yourself. Indeed, these questions frame the purpose of life. There is nothing else worth living for other than Jesus. We will spend our lives building His Kingdom or building our own. The Kingdom of God is eternal.
It will exist long after our own little kingdoms have faded in history, washed away by the tides of time. But Jesus remains. His Kingdom endures forever. Why would we spend our lives pursuing things which will not last when we can spend it for that which lasts forever?