In today's New Testament reading (Gal 6:14-18), Paul says, "far be it from me to glory except in the cross of our Lord Jesus Christ." It is in that cross, in the power of Christ, that the disciples boast in Luke's Gospel (Luke 10:1-12, 17-20): “Lord, even the demons are subject to us in your name!"
We know inherently how powerful words are, how easily they can heal or hurt. The greatest word - the Incarnate Word of God - is the most powerful of all, powerful enough to cast out demons.
Peter Kreeft spoke eloquently about the power of words - and the Word in particular. "We all know there are magic words... two of the most familiar are 'I love you' and 'I hate you'. These are not labels. These are weapons - arrows that pierce through flesh and into hearts... In a name, the Universe was created..."
In the name of Christ, everything we are and have came into being. We have nothing and we are nothing without that Word. That name, that Word, is our beginning and end. It is our one and only great weapon against evil, and without it we are powerless.
Far be it from me to glory except in the cross of our Lord Jesus Christ.