And Jesus took the loaves, and when He had given thanks He distributed them to the disciples, and the disciples to those sitting down; and likewise of the fish, as much as they wanted. – John 6:11

Five thousand people and five little biscuits wherewith to feed them! The disproportion is enormous: if each one should have only the tiniest crumb, there would not be sufficient. In like manner, there are millions of people in London, and only a handful of whole-hearted Christians earnestly desiring to see the city converted to Christ; there are more than a thousand millions of men in this round world, and oh, so few missionaries breaking to them the bread of life; almost as few for the millions, as were these five barley cakes for those five thousand! The problem is a very difficult one. The contrast between the supply and the demand would have struck us much more vividly if we had been there, in that crowd at Bethsaida, than it does sitting here, nearly nineteen hundred years afterwards, and merely hearing about it. But the Lord Jesus was equal to the emergency: none of the people went away without sharing in His bounty; they were all filled. Our blessed Master, now that He has ascended into the heavens, has more, rather than less, power; He is not baffled because of our lack, but can even now use paltry means to accomplish His own glorious purposes; therefore, let no man’s heart fail him. Do not despair of the evangelization of London, nor think it hopeless that the gospel should be preached in all nations for a testimony unto them. Have faith in God, who is in Christ Jesus; have faith in the compassion of the Great Mediator: He will not desert the people in their spiritual need, any more than He failed that hungry throng, in their temporal need, long ago. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2216.cfm