Now, behold, in my trouble I have prepared for the house of the LORD… – 1 Chronicles 22:14

Read it: “Now, behold, in my trouble I have prepared for the house of the Lord an hundred thousand talents of gold;” and so on. In the margin of your Bibles, you will find the words, “in my poverty.” David thought little of what he had prepared. He calls it poverty, I think, because it is the way of the saints to count anything that they do for God to be very little. The most generous men in the world think the least of what they give to God’s cause. David, with his millions that he gives, says, “In my poverty I have prepared for the house of the Lord.” As he looked at the gold and silver, he said to himself, “What is all this to God?” And the brass and the iron, that could not be reckoned, it was so much and so costly; he thought it was all nothing to Jehovah, who fills heaven and earth, whose grandeur and glory are altogether unspeakable. If you have done the most that you can for God, you will sit down, and weep that you cannot do ten times as much. You that do little for the Lord will be like a hen with one chick; you will think a great deal of it. But if you have a great number of works, and you are doing much for Christ, you will wish that you could do a hundred times as much… Oh, to be multiplied a thousand-fold, that we might, anywhere and everywhere, serve Jesus with heart, and mind, and soul, and strength! So, David here considers that what he did was very little. Yet, it was proof of his sincerity…To have something to do for Jesus, and to go right on with it, is one of the best ways to get over a bereavement, or any other mental depression. If you can pursue some great object, you will not feel that you are living for nothing. You will not sit down in despair; for, whatever your trouble may be, you will still have this to live for, “I want to help in building the Church of God, and I will do my part in it whatever happens to me. Come poverty or wealth, come sickness or health, come life or death, as long as there is breath in my body, I will go on with the work that God has given me to do.” ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/2261.cfm