The form in which our Lord presents His exhortation in the text is interesting and suggestive. He uses three words--"ask," "seek," "knock," which seem to intimate a gradation, and to lead up to a climax. The word "ask" indicates the felt want of a good which may be obtained; not purchased, but obtained as a free gift. The word "seek" indicates the continuance of the asking, with the added idea, perhaps, that our need is our fault, and that what we seek has been previously lost. The word "knock" supposes a difficulty in obtaining, the delay of the answer, a blessing shut up, and not immediately forthcoming. Here, then, is a hint of possible difficulties. Nevertheless, a promise is annexed, which is all-sufficient. "Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you." Christ's word is assurance enough for us; but He condescends to append an argument drawn from a comparison between man and God, between imperfect earthly parents and the infinitely perfect Father in heaven; an argument which ought to be conclusive. "What man is there of you, whom if his son ask bread, will he give him a stone? Or if he ask a fish, will he give him a serpent? If ye then, being evil, know how to give good gifts unto your children, how much more shall your Father who is in heaven give good things to them that ask Him?" The facts as they lie open on the surface of the text are among the most solemn and momentous facts of our life and thought. There is a God, holding in the universe a position which is exclusively His own, the great and only Giver of all good. Man's position is one of dependence; in no sense is he self-sufficient. As it is God's prerogative to give, so it is man's duty and interest to ask. There is a possibility of communion between Him who gives and him who needs; the hand of want brought into contact with the hand that supplies. Then we have the fact that God is both able and willing to satisfy man's want out of His own fulness. Further, we have the tender solicitation to trust on our part--the absolute promise that such trust can never be misplaced--and the encouraging assurance that the God who gives is moved towards His creatures who ask by all the sympathies of a Divine Fatherhood. Every ground of the confidence that children have in their parents is consolidated into a rock of immovable repose when the Heavenly Father comes in question.