In the Garden of Eden, before sin ever entered the world, man named. Adam named the animals and named Eve, and as he understood certain things, so he named them. As we think, we put things in verbal pigeonholes. That is what names do. They serve the namers.
Namers then use names as tools.
When Christ is about to change Peter s life, he told him that he would no longer be known as Simon, but as Rock. Thus, when Christ used a name, it meant something. OT characters would frequently name their children to signify some very impt. Also, the names of God tell us about his character and may be used to convey who he is. In Exodus 3, right after God calls Moses, and appears to him in the burning bush, God tells him to Go.