2. The unity of the church, and the concord of believers, is necessary to its strength and safety; for Christ also strengtheneth as well as quickeneth them by suitable means. Woe to him that is alone! but in the army of the Lord of hosts we may safely march on, when stragglers are catched up or killed by the weakest enemy. A threefold cord is not easily broken. Enemies both spiritual and corporal are deterred from assaulting the church or any of its members, while they see us walk in our military unity and order. In this posture every man is a blessing and defence unto his neighbour. As every soldier hath the benefit of all the conduct, wisdom, and valour of the whole army, while he keepeth in his place; so every weak christian hath the use and benefit of all the learning, the wisdom, and gifts of the church, while he keepeth his station, and walketh orderly in the church. The hand, the eye, the ear, the foot, and every member of the body, is as ready to help or serve the whole, and every other particular member, as itself; but if it be cut off, it is neither helpful, nor to be helped. Oh what mercy is it for every christian, that is unable to help himself, to have the help of all the church of God! their directions, their exhortations, their love, their prayer, their liberality and compassion, according to their several abilities and opportunities! as infants and sick persons have the help of all the rest of the family that are in health.
3. Unity and concord, as they proceed from love, so they greatly cherish and increase love; even as the laying of the wood or coals together is necessary to the making of the fire, which the separating of them will put out.[152] Holy concord cherisheth holy converse and communion; and holy communion powerfully kindleth holy love. When the servants of Christ do see in each other the lustre of his graces, and hear from each other the heavenly language which floweth from a divine and heavenly mind, this potently kindleth their affections to each other, and maketh them close with those as the sons of God, in whom they find so much of God; yea, it causeth them to love God himself in others, with a reverent, admiring, and transcendent love, when others, at the best, can love them but as men. Concord is the womb and soil of love, although it be first its progeny. In quietness and peace the voice of peace is most regarded.
4. Unity and concord is the church's beauty: it maketh us amiable even to the eye of nature, and venerable and terrible even to the eye of malice. A concord in sin is no more honour, than it is for conquered men to go together in multitudes to prison or captivity; or for beasts to go by droves unto the slaughter. But to see the churches of Christ with one heart and soul acknowledging their Maker and Redeemer, and singing his praise as with one voice, and living together in love and concord, as those that have one principle, one rule, one nature, one work, one interest, and hope, and end, this is the truly beauteous symmetry, and delectable harmony. Psal. cxxxiii. "Behold how good and how pleasant it is for brethren to dwell together in unity! It is like the precious ointment upon the head, that ran down upon the beard, even Aaron's beard, that went down to the skirts of his garment. As the dew of Hermon, and as the dew that descendeth upon the mountains of Zion: for there the Lord commanded the blessing, even life for evermore." The translators well put this as the contents of this psalm, "The benefit of the communion of saints."