“And it shall come to pass that whosoever shall call on the name of the Lord shall be delivered” -Joel 2:32

Why do I not call on His name? Why do I run to this neighbor and that when God is so near and will hear my faintest call? Why do I sit down and devise schemes and invent plans? Why not at once roll myself and my burden upon the Lord? Straightforward is the best runner–why do I not run at once to the living God? In vain shall I look for “deliverance anywhere else; but with God I shall find it; for here I have His royal “shall” to make it sure. I need not ask whether I may call on Him or not, for that word “Whosoever” is a very wide and comprehensive one. Whosoever means me, for it means anybody and everybody who calls upon God. I will therefore follow the leading of the text, and at once call upon the glorious Lord who has made so large a promise. My case is urgent, and I do not see how I am to be delivered; but this is no business of mine. He who makes the promise will find ways and means of keeping it. It is mine to obey His commands; it is not mine to direct His counsels. I am His servant, not His solicitor. I call upon Him, and He will deliver.

The Lord will go through with His covenant engagements. Whatever He takes in hand He will accomplish; hence past mercies are guarantees for the future and admirable reasons for continuing to cry unto Him.  ~C. H. Spurgeon

http://devotionals.ochristian.com/Mrs.-Charles-Cowman-Devotional.-Streams-in-the-Desert/1105.shtml