The Sadhu spoke of his own experience -- the Rest and Peace which he enjoys (Bisram, Santi, Aram). Previously he had no lack of everything which the world could give -- wealth, family etc., but he did not enjoy Peace through them. But in Christ he had found peace (Santi) when he realized his relationship with Him. A doctor friend of the Sadhu's related that a man whose arm was broken through an accident came to him and said, "Doctor, my arm is very painful. Take the pain away for me." The doctor told him that first of all the two broken bones must be set and be knit together; then the swelling and the pain would go away of themselves. In the same way people want peace and they want blessings but they don't want to come into right relationship with God, the Giver of blessing. When we come into this right relationship with Him, our restlessness will go and in its stead we shall have wonderful peace.
SOURCE: http://sadhusundarsingh.homestead.com/files/introduction.html