As followers of Christ we should take this quote to heart in all that we do and are called to do by sincerely expecting great things from God in the midst of our attempting great things for God. I'll admit that a quote like this is a lot easier to read than it is to see come to fruition. Currently I have been dealing with a lot of major setbacks in my ministry, not only me, but my entire team.
Although in the midst of trying times, a quote like this encourages me because it reminds me to stop relying on myself to produce the results. Six months into the ministry here and I can honestly say that I have failed at accomplishing great things myself. Rather I have had to realize that I need to be more expectant of God to do great things as I attempt great things for him.
If we are all honest, we give a lot of lip service to things that God can do, when in reality we often times rely on our own efforts to make those great things happen. Maybe, you too are in the midst of a trying time and need to realize that you should continue to do those great things for God, but even more so you need to expect great things to come from God.
Attempting great things for God is not enough, it can't be enough. This does not mean that you should not attempt greatness for God because you should. It is still good to attempt greatness for God, but your efforts alone will not produce results. Rather only God himself can cause greatness to happen. Our attempts our right when we first go to God and are expectant on him. No, our attempts do not produce greatness, but it does help when we are expectant on God to produce the greatness.