Now, that baptism is essential to church-communion, I prove from 1 Cor. xii., where we shall find the apostle labouring to prevent an evil use that might be made of spiritual gifts, as thereby to be puffed up, and to think that such as wanted them were not of the body, or to be esteemed members: he thereupon resolves, that whoever did confess Christ, and own him for his head, did it by the Spirit, ver. 3, though they might not have such a visible manifestation of it as others had, and therefore they ought to be owned as members, as appears, ver. 23. And not only because they have called him Lord by the Spirit, but because they have, by the guidance and direction of the same Spirit, been baptized, ver. 13, "For by one Spirit we are all baptized into one body," &c. I need not go about to confute that notion that some of late have had of this text., viz., that the baptism here spoken of is the baptism of the Spirit, because you have not owned and declared that notion as your judgment, but on the contrary, all of you that I have ever conversed with, have declared it to be understood of baptism with water, by the direction of the Spirit: If so, then it follows, that men and women are declared members of Christ's body by baptism, and cannot be by scripture reputed and esteemed so without it; which farther appears from Rom. vi. 5, where men by baptism are said to be "planted" into the likeness of his death and Col. ii. 12, we are said to be "buried with him" by baptism. All which, together with the consent of all Christians (some few in these later times excepted), do prove that baptism is necessary to the initiating persons into the Church of Christ.
(3.) Holiness of life is essential to church-communion, because it seems to be the reason why Christ founded a church in the world, viz., that men might thereby be watched over, and kept from falling; and that if any be overtaken with a fault, he that is spiritual might restore him, that by this means men and women might be preserved without blame to the coming of Christ; and the grace of God teacheth us to deny ungodliness and worldly lusts, and to live soberly and uprightly in this present evil world; Tit. ii. 11, 12. "And let every one that nameth the name of Christ, depart from iniquity;" 2 Tim. ii. 19. And James tells us (speaking of the Christian religion), that "pure religion, and undefiled before God, is this, To visit the fatherless and widows in their affliction, and to keep ourselves unspotted from the world;" James i. 27. From all which (together with many more texts that might be produced) it appears, that an unholy and profane life is inconsistent with Christian religion and society; and that holiness is essential to salvation and church-communion. So that these three things, faith, baptism, and a holy life, as I said before, all churches must agree and unite in, as those things which, when wanting, will destroy their being. And let not any think, that when I say, believing the Son of God died for the sins of men is essential to salvation and church-communion, that I hereby would exclude all other articles of the Christian creed as not necessary; as the belief of the resurrection of the dead, and eternal judgment, &c., which, for want of time, I omit to speak particularly to, and the rather, because I understand this great article of believing the Son of God died for the sins of men is comprehensive of all others, and is that from whence all other articles may easily be inferred.