Now unto Him that is able to do exceeding abundantly above all that we ask or think, according to the power that worketh in us… – Ephesians 3:20

Oh, for a mighty belief in that God who “is able to do exceeding abundantly above all that we ask or think, according to the power that worketh in us”; and that power is the Holy Ghost, who cannot be straitened!

Why, then, should we not come up to the house of God with the prayer, “O Lord, work mighty marvels”? Is He not the God that doeth great wonders? Should we not expect Him to do large things? I know some will say, “Well, if I were to see a great many converted, I should be afraid that they would, many of them, go back.” But my experience tells me that there is no reason to believe that when many are converted there are more mistaken persons in the number, in proportion, than when few are converted. In fact, I think that I have noticed that the more that are received into the church the better is the quality. And the reason is this-that, when few are coming, there is a strong temptation to accept them with less discretion; but, when there are a great many, we can afford to be somewhat more rigid; so that the more the merrier, and the more the sounder. I think that it is often the case. Let us believe that the Spirit of God can save a parish, can save a city, can shake London from end to end. Oh, that God would enlarge the capacity of our faith! “According to your faith be it unto you.” But we have not more than sixpenny-worth of faith; and when we get as much as that represents, we think that we are getting rich; and yet there are mines of untold wealth of the grace of God to be had. Oh, that we had the faith wherewith to take possession of them! ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2218.cfm