5. How the church shall herself be affected with this increase of her numbers, v. 5. (1.) She shall be in a transport of joy upon this account: "Thou shalt see and flow together" (or flow to and fro), "as in a pleasing agitation about it, surprised at it, but extremely glad of it." (2.) There shall be a mixture of fear with this joy: "Thy heart shall fear, doubting whether it be lawful to go in to the uncircumcised and eat with them." Peter was so impressed with this fear that he needed a vision and voice from heaven to help him over it, Acts x. 28. But, (3.) "When this fear is conquered thy heart shall be enlarged in holy love, so enlarged that thou shalt have room in it for all the Gentile converts; thou shalt not have such a narrow soul as thou hast had nor affections so confined within the Jewish pale." When God intends the beauty and prosperity of his church he gives this largeness of heart and an extensive charity. (4.) These converts flocking to the church shall be greatly admired (v. 8): Who are these that fly as a cloud? Observe, [1.] How the conversion of souls is here described. It is flying to Christ and to his church, for thither we are directed; it is flying like a cloud, though in great multitudes, so as to overspread the heavens, yet with great unanimity, all as one cloud. They shall come with speed, as a cloud flying on the wings of the wind, and come openly, and in the view of all, their very enemies beholding them (Rev. xi. 12), and yet not able to hinder them. They shall fly as doves to their windows, in great flights, many together; they fly on the wings of the harmless dove, which flies low, denoting their innocency and humility. They fly to Christ, to the church, to the word and ordinances, as doves, by instinct, to their own windows, to their own home; thither they fly for refuge and shelter when they are pursued by the birds of prey, and thither they fly for rest when they have been wandering and are weary, as Noah's dove to the ark. [2.] How the conversion of souls is here admired. It is spoken of with wonder and pleasure: Who are these? We have reason to wonder that so many flock to Christ: when we see them all together we shall wonder whence they all came. And we have reason to admire with pleasure and affection those that do flock to him: Who are these? How excellent, how amiable are they! What a pleasant sight is it to see poor souls hastening to Christ, with a full resolution to abide with him!