How I Know God Answers Prayer

It was at the close of the 1908-10 furlough-during which, as a family, we had been blessed with many and, to our weak faith, wonderful answers to prayer-that my oldest son urged me to put down in some definite form the answers to prayer of my life, and extracted from me a solemn promise that I would do so. But months passed after returning to China, and the record had not been touched. Then came a sudden and serious illness which threatened my life, when the doctor told me I must not delay in getting my affairs in order. It was then that an overwhelming sense of regret took possession of me that I had not set down the prayer testimonies, and solemnly I covenanted with the Lord that if he would raise me up they should be written.