DUNAMIS - (doo'-nam-is) is the Greek word for power. It is where we get the words dynamite, dynamic or dynamo. As it is used in the Bible, we are empowered (dunamis) by the Holy Spirit to do the work and the will of our Father. (Acts 1:8, 10:38)
Why do you need to know this greek word? Because without it, you don't stand a chance in making a real difference. So much of religion today is defined by what we do. The fact of the matter is, we cannot do much on our own. That isn't to say we cannot do anything - but think about this.
My daughter constantly says to me, "Daddy! Watch this!" She will run as fast as she can, jump as far as she can (which is about 4 or 5 feet). Then she will ask me, "Was that good!" Of course it was good, it was the best that she could do. I praise her for doing her best! Now sometimes I pick her up and toss her into the air. (Don't worry it isn't as far as your imagination just went.) and she giggles with glee and says, "Do it again dad, do it again!" (This kid is going to love roller coasters!) Why does she want to do it again? Because she is experiencing something that she cannot do on her own.
It's the same way with God. Our best efforts are like my daughters 4 foot broad jump. But when the dunamis power of God is allowed into our lives, we experience things that we cannot do on our own. Things that make a huge difference in the lives of those around us. When we pray and God answers our prayers for healing, power, provision, wisdom, stability, faith, hope, joy, peace and love - suddenly our religion and faith goes from a 4 foot broad jump to, "Do it again God, do it again!!!"