God gives to His people the propensity to cling. Though this is a very simple sort of faith, it is a very complete and effectual form of it. In fact, it is the heart of all faith, and that to which we are often driven when we are in deep trouble or when our mind is somewhat bemuddled by sickness or depression in spirit. We can cling when we can do nothing else, and that is the very soul of faith. Always cling to what you know.