When God calls us He usually does this suddenly, and typically without any preannouncement. Will we be ready to answer Him at a moment's notice, or will we need to prepare ourselves and make life adjustments before answering His call? Will we instantly reply, "Here I am!" when He calls, or will we need to think about it? I find it interesting that most of the great prophets and leaders in the Bible answered instantly when God called them. In most cases there was no hesitation and no consideration as to why they were being called. There might have been some trepidation and uncertainty like there was in the case of Moses when he felt his ability to speak would be an encumbrance, but for the most part there was an instant positive response.