5. The concord of believers doth greatly conduce to the successes of the ministry, and propagation of the gospel, and the conviction of unbelievers, and the conversion and salvation of ungodly souls. When Christ prayeth for the unity of his disciples, he redoubled this argument from the effect or end, "that the world may believe that thou hast sent me;" and "that the world may know that thou hast sent me, and hast loved them," &c. John xvii. 21, 23. Would this make the world believe that Christ was sent of God? Yes, undoubtedly if all christians were reduced to a holy concord, it would do more to win the heathen world, than all other means can do without it. It is the divisions and the wickedness of professed christians, that maketh christianity so contemned by the Mahometans, and other infidels of the world; and it is the holy concord of christians that would convince and draw them home to Christ. Love, and peace, and concord are such virtues, as all the world is forced to applaud, notwithstanding nature's enmity to good. When the first christian church "were all with one accord in one place, and continued daily with one accord in the temple, and breaking bread from house to house partook of food with gladness and singleness of heart," and when "the multitude of believers were of one heart and of one soul," Acts ii. 1, 46; iv. 32, then did "God send upon them the Holy Ghost, and then were three thousand converted at a sermon," Acts ii. 41; and with "great power gave the apostles witness of the resurrection of the Lord Jesus, and great grace was upon them all," Acts iv. 33.
[Sidenote: How our concord would promote the conversion of infidels.]
Our concord in religion hath all these advantages for the converting of unbelievers and ungodly men. 1. It is a sign that there is a constraining evidence of truth in that gospel which doth convince so many; a concurrent satisfaction and yielding to the truth, is a powerful testimony for it. 2. They see then that religion is not a matter of worldly policy and design, when so many men of contrary interests do embrace it. 3. And they see it is not the fruit of melancholy constitutions, when so many men of various temperatures entertain it. 4. They may see that the gospel hath power to conquer that self-love and self-interest which is the most potent thing in vitiated nature: otherwise it could never make so many unite in God as their common interest and end. 5. They may see that the gospel and Spirit of Christ are stronger than the devil and all the allurements of the flesh and world, when they can make so many agree in the renouncing of all earthly vanities, for the hopes of everlasting life. 6. They will see that the design and doctrine of christianity are good and excellent, beseeming God, and desirable to man; when they see that they produce so good effects, as the love, and unity, and concord of mankind. 7. And it is an exceeding great and powerful help to the conversion of the world in this respect, because it is a thing so conspicuous in their sight, and so intelligible to them, and so approved by them. They are little wrought on by the doctrine of Christ alone, because it is visible or audible but to few, and understood by fewer, and containeth many things which nature doth distaste; but the holy concord of believers is a thing that they are more able to discern and judge of, and do more generally approve. The holy concord of christians must be the conversion of the unbelieving world, if God have so great a mercy for the world; which is a consideration that should not only deter us from divisions, but make us zealously study and labour with all our interest and might, for the healing of the lamentable divisions among christians, if we have the hearts of christians, and any sense of the interest of Christ.
6. The concord of christians doth greatly conduce to the ease and peace of particular believers. The very exercise of love to one another doth sweeten all our lives and duties; we sail towards heaven in a pleasant calm, with wind and tide, when we live in love and peace together. How easy doth it make the work of godliness! How light a burden doth religion seem, when we are all as of one heart and soul!
7. Lastly, consider whether this be not the likest state to heaven, and therefore have not in it the most of christian excellency and perfection? In heaven there is no discord, but a perfect consort of glorified spirits, harmoniously loving and praising their Creator. And if heaven be desirable, holy concord on earth is next desirable.
[Sidenote: The mischiefs of division.]