He that observeth the wind shall not sow; and he that regardeth the clouds shall not reap. – Ecclesiastes 11:4

“Cast thy bread upon the waters:” “Give a portion to seven, and also to eight.” If anybody occupies his mind unduly with the difficulties connected with liberality, he will do nothing in that line. “He that observeth the wind shall not sow; and he that regardeth the clouds shall not reap.” “How am I to know,” says one, ” that the person to whom I give my money is really deserving? How do I know what he will do with it? How do I know but what I may be encouraging idleness or begging? By giving to the man, I may be doing him real injury.” Perhaps you are not asked to give to an individual, but to some great work. Then, if you regard the clouds, you will begin to say, “How do I know that this work will be successful, the sending of missionaries to a cultivated people like the Hindoos? Is it likely that they will be converted?” You will not sow, and you will not reap if you talk like that; yet there are many who do speak in that fashion. There was never an enterprise started yet but somebody objected to it; and I do not believe that the best work that Christ Himself ever did was beyond criticism; there were some people who were sure to find some fault with it. “But,” says another, “I have heard that the management at headquarters is not all it ought to be; I think that there is too much money spent on the secretary, and that there is a great deal lost in this direction and in that.” Well, dear friend, it goes without saying that if you managed things, they would be managed perfectly; but, you see, you cannot do everything, and therefore you must trust somebody. I can only say, with regard to societies, agencies, works, and missions of all kinds, “He that observeth the wind shall not sow; and he that regardeth the clouds shall not reap.” If that is what you are doing, finding out imperfections and difficulties, it will end in this, you will do nothing at all. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/2264.cfm