Charles H. Spurgeon on Psalms 81:10

Open thy mouth wide, and I will fill it. Surely this teaches us, that the greater and more valuable the blessings are which we implore from the divine beneficence, the more sure shall we be to receive them in answer to prayer...But, though men are to be blamed, that they so seldom acknowledge God in any thing, yet they are still more to be blamed, that they seek not from him the chief good. Men may, however, possibly cry to God for inferior things, and apply in vain. Even good men may ask for temporal blessings, and not receive them; because the things we suppose good, may not be good, or not good for us, or not good for us at present. But none shall seek God for the best of blessings in vain. If we ask enough, we shall have it. While the worldling drinks in happiness, if it will bear the name, with the mouth of an insect, the Christian imbibes bliss with the mouth of an angel. His pleasures are the same in kind, with the pleasure of the infinitely happy God. John Ryland.