Praying to a Milk Jug?

One could probably write a tome about how bad this analogy is, but I'll just go with this: unlike the immutable word of God, milk will go bad in a few days, and you'll have to throw it out.

As the risk of a very bad pun on a very good hymn, "Great Is Thy Faithfulness", the second line says, "there is no shadow of turning with Thee"