Clean, empty containers bring me a lot of pleasure. Especially empty glass jars, lined up on my kitchen shelves, waiting to be filled with freshly-prepared sauce or salad dressing. Thinking about my words of prayer as precious little teacups, much more delicate yet serviceable containers, also brings me pleasure.
Every word of prayer is a container, ready and waiting for me to receive from God. The expression of my heart and soul is an invitation and a signal that I am seated at the dining table awaiting.
God is not my waiter or server, of course. I am the servant in our relationship, but the picture of my willingness to receive is what I'm describing. It is a decent, respectful, civilized attitude of expectation that The Almighty God knows I am present and willing to receive.