"If you have been knocking at the gate of mercy and have received no answer, shall I tell you why the mighty Maker has not opened the door and let you in? Our Father has reasons peculiar to himself for keeping us waiting. Sometimes it is to show His power and His sovereignty, that men may know that Jehovah has a right to give or to withhold. More frequently the delay is for our profit.
You are perhaps kept waiting in order that your desires may be more fervent. God knows that delay will quicken and increase desire, and that if He keeps you waiting, you will see your necessity more clearly, and will seek more earnestly; and that you will prize the mercy all the more for its long tarrying. There may also be something wrong in you that has need to be removed, before the joy of The Lord is given. Perhaps your views of the gospel plan are confused, or you may be placing some little reliance on yourself, instead of trusting simply and entirely in The Lord Jesus. Or, God makes you tarry awhile that He may the more fully display the riches of His grace to you at last.
Your prayers are all filed in Heaven, and if not immediately answered; they are certainly not forgotten, but in a little while shall be fulfilled to your delight and satisfaction. Let not despair make you silent, but continue instant in earnest supplication."
Charles H. Spurgeon