All of our lives, all of creation can be seen as communication from God to us. All of it, including ourselves, are the on-going words of God, His continual speaking. We may go our whole lives and not recognize the world as such, as the words of God. But, once our eyes are open to it, everything becomes a conversation with Him and from Him. That is why, when asked for proof of God, the first impulse is to point to everything.
The Communion, the bread and wine, is a call to recognize, in unity, the word of God in the elements. The bread and wine become a shared meaning that only God knows the depths of and which we only participate in partly. The bread and wine are His language which we attempt to speak in Communion with Him. These are our first words in our new birth.