Ellen G. White

After the prayer is made, if the answer is not realized immediately, do not weary of waiting and become unstable. Waver not. Cling to the promise, "Faithful is He that calleth you, who also will do it." Like the importunate widow, urge your case, being firm in your purpose. Is the object important and of great consequence to you? It certainly is. Then waver not, for your faith may be tried. If the thing you desire is
valuable, it is worthy of a strong, earnest effort. You have the promise; watch and pray. Be steadfast and the prayer will be answered; for is it not God who has promised?