“The nations shall flow unto (the Mountain of the Lord).” – Isaiah 2:2, Micah 4:1

Of themselves, made willing in the day of God’s power, they shall flow to it. Whenever the church of God is increased by unwilling converts it loses strength; whenever men join the church because of oppression, which would drive them to make a profession of religion, they do not flow, the church is weakened and not strengthened but in those days the converts shall be voluntarily won and shall come in willingly by divine grace; they shall flow unto it. This represents the power of the work of conversion. They “shall flow to it.” Imagine an idiot endeavoring to stop the river Thames. He gets for himself a boat, and there he stands, endeavoring to push back the stream. He objects to it flowing towards the sea. and with his hands he tries to put it back. Would you not soon hear laughter along the banks? Ah, fool, to attempt to stop the stream! Now, the word “flow,” here conveys just the idea. “The nations shall flow unto it.” The Secularist may rise up and say, “Oh, why be converted to this fanatical religion? Look to the things of time.” The false priests may rouse themselves with all their anger to defy Christ, and endeavor to keep their slaves; but all their attempts to stop conversion will be like an idiot seeking to drive back a mighty stream with his puny hands. “All nations shall flow unto it.” What an idea it is! Oh, take your stand today, like prophets of the Lord, and look into the future. Today the Church appears like the dry bed of a torrent; here I stand, and I see a little water flowing in a secret and thread-like stream, amongst the stones. So little is it that I can scarcely detect it, but I take the glass of prophecy, I look far onward, and I see a rolling mass of water, such as is sometimes seen in the rapid rivers of Africa; and there it is, coming with thundering sound. Wait for a few more years, and that torrent, like Kishon’s mighty river, sweeping all before it, shall fill this dry bed, and swell on, and on, and on, with tumultuous waves of joy, till it meets the ocean of Christ’s universal reign, and loses itself in God. Here you see, then, you have more than your imagination can grasp. This stupendous mountain, and all the nations of the earth-vast numbers with immense force, spontaneously coming up to the house of the living God. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0249.cfm