There's no clearer doctrine taught and demonstrated in the Bible, especially the NT, about authority being released with one's words. Jesus did it if I'm not mistaken with every healing and deliverance performed, the disciples also, etc. Even a gentile centurion saw it, "Speak the word only and my servant will be healed", and prefaced that with an understanding of how authority works. The Bible is clear that God cares about our 'stuff', even something as lowly and insignificant as an axe head.