For example, if I had a dull pocketknife, I would take it to a knife-sharpener and tell him to sharpen it.
If he told me it would be done some time this week, and that he would call me when it was done, what would I do?
I would agree with him and then go about my business knowing that when the job was done, I would get a call. I would not get mad at him, or become impatient, and I would not end up believing he could not sharpen my knife.
From Bruce Ball’s Sermon: Passionate Prayer