What happens when we don't communicate? So many times we talk, but we don't speak. And sometimes we hear, but we don't listen. We may as well be talking to a wall (or listening to one).
It's like this with how we talk to God too. We need to make our desires clear if we want Him to hear us. Even though He knows our every need (long before we do), it keeps us humble to admit that we are lost or that we are sorry for sinning. We need to listen to what HE is telling us and obey immediately. Even if it is something we really don't want to do. After all, He knows better.
When we don't communicate we lose the message and rely on our own resources to get us through. Mostly that is going to fail us. Study the word, dear Reader, so that you know His voice. Study so that you understand His words.
This is just a little humor (please don't be offended, I am of Irish and Austrian descent), but it shows what happens when our communication skills are less than ideal.