It is very apparent from the Word of God that He often tries the faith and patience of His people when they are crying to Him for some great and important mercy, by withholding the mercy sought for a season; and not only so, but at first He may cause an increase of dark appearances. And yet He, without fail, at last prospers those who continue urgently in prayer with all perseverance and "will not let him go except He blesses."
~ Jonathan Edwards