Isaiah 60:22

A little one shall become a thousand; though of very small beginning, and contemptible, yet shall greatly multiply. Though the church at first will be but a very few, yet will it increase into many thousands; this plant or seed will spring up to many. Some understand it, that many shall be converted, and brought into the church, by men of very few, low, and mean parts; however, these things seem to agree better to some state of the church here, than to the state of the church triumphant. A small one a strong nation: if this signify, not the same with the other, as probably it may, the word strong signifying numerous, Joel 1:6, then we may understand it, that as the former respected their number, so this their strength. Will hasten it in his time, viz. in due time, the time that I have appointed: q.d. Let not this be doubted, because I have undertaken it, to whom nothing is difficult. When the time of the promise comes, he will make haste, it will be done speedily; or as soon as it begins it shall hasten apace, as it did in Peter's sermon, three thousand in one day, Ac 2, and five thousand in another, Ac 4, and so soon filled the whole world, and one Paul planted whole churches, as the people in Egypt increased from seventy persons to a vast multitude.