It is always right that a man should be able to render a reason for the faith that is within him.—Sydney Smith.

In each of the New England colonies under consideration, the settlers organized their church system and established its relation to the State, expecting that the strong arm of the temporal power would insure stability and harmony in both religious and civil life. As we know, they were speedily doomed to disappointment. As we have seen, they failed to estimate the influences of the new land, where freedom from the restraint of an older civilization bred new ideas and estimates of the liberty that should be accorded men. Within the first decade Massachusetts had great difficulty in impressing religious uniformity upon her rapidly increasing and heterogeneous population. She found coercion difficult, costly, dangerous to her peace, and to her reputation when the oppressed found favorable ears in England to listen to their woes. Ecclesiastical differences of less magnitude, contemporary in time and foreshadowing discontent and opposition to the established order of Church and State, were settled in more quiet ways. John Davenport, after witnessing the Antinomian controversy, declined the pressing hospitality of Massachusetts, and led his New Haven company far enough afield to avoid theological entanglements or disputed points of church polity. Unimpeded, they would make their intended experiment in statecraft and build their strictly scriptural republic. Still earlier Thomas Hooker, Samuel Stone, and John Warham led the Connecticut colonists into the wilderness because they foresaw contention, strife, and evil days before them if they were to be forced to conform to the strict policy of Massachusetts.[a] They preferred, unhindered, to plant and water the young vine of a more democratic commonwealth. And even as Massachusetts met with large troubles of her own, so smaller ones beset these other colonies in their endeavor to preserve uniformity of religious faith and practice. Until 1656, outside of Massachusetts, sectarianism barely lifted its head. Religious contumacy was due to varying opinions as to what should be the rule of the churches and the privileges of their members. As the churches held theoretically that each was a complete, independent, and self-governing unit, their practice and teaching concerning their powers and duties began to show considerable variation. Such variation was unsatisfactory, and so decidedly so that the leaders of opinion in the four colonies early began to feel the need of some common platform, some authoritative standard of church government, such as was agreed upon later in the Cambridge Platform of 1648 and in the Half-Way Covenant, a still later exposition or modification of certain points in the Platform.

The need for the Platform arose, also, from two other causes: one purely colonial, and the other Anglo-colonial. The first was, since everybody had to attend public worship, the presence in the congregations of outsiders as distinct from church members. These outsiders demanded broader terms of admission to holy privileges and comforts. The second cause, Anglo-colonial in nature, arose from the inter-communion of colonial and English Puritan churches and from the strength of the politico-ecclesiastical parties in England. Whatever the outcome there, the consequences to colonial life of the rapidly approaching climax in England, when, as we now know, King was to give way to Commonwealth and Presbyterianism find itself subordinate to Independency, would be tremendous.

In the first twenty years of colonial life, great changes had come over New England. Many men of honest and Christian character—"sober persons who professed themselves desirous of renewing their baptismal covenant, and submit unto church discipline, but who were unable to come up to that experimental account of their own regeneration which would sufficiently embolden their access to the other sacrament" (communion) [34]—felt that the early church regulations, possible only in small communities where each man knew his fellow, had been outgrown, and that their retention favored the growth of hypocrisy. The exacting oversight of the churches in their "watch and ward" over their members was unwelcome, and would not be submitted to by many strangers who were flocking into the colonies. The "experimental account" of religion demanded, as of old, a public declaration or confession of the manner in which conviction of sinfulness had come to each one; of the desire to put evil aside and to live in accordance with God's commands as expressed in Scripture and through the church to which the repentant one promised obedience. This public confession was a fundamental of Congregationalism. Other religious bodies have copied it; but at the birth of Congregationalism, and for centuries afterwards, the bulk of European churches, like the Protestant Episcopal Church to-day, regarded "Christian piety more as a habit of life, formed under the training of childhood, and less as a marked spiritual change in experience." [35]

It followed that while many of the newcomers in the colonies were indifferent to religion, by far the larger number were not, and thought that, as they had been members of the English Established Church, they ought to be admitted into full membership in the churches of England's colonies. They felt, moreover, that the religious training of their children was being neglected because the New England churches ignored the child whose parents would not, or could not, submit to their terms of membership. Still more strongly did these people feel neglected and dissatisfied when, as the years went by, more and more of them were emigrants who had been acceptable members of the Puritan churches in England. They continued to be refused religious privileges because New England Congregationalism doubted the scriptural validity of letters of dismissal from churches where the discipline and church order varied from its own. Within the membership of the New England churches themselves, there was great uncertainty concerning several church privileges, as, for instance, how far infant baptism carried with it participation in church sacraments, and whether adults, baptized in infancy, who had failed to unite with the church by signing the Covenant, could have their children baptized into the church. Considerations of church-membership and baptism, for which the Cambridge Synod of 1648 was summoned, were destined, because of political events in England, to be thrust aside and to wait another eight years for their solution in that conference which framed the Half-Way Covenant as supplementary to the Cambridge Platform of faith and discipline.

What has been termed the Anglo-colonial cause for summoning the Cambridge Synod finds explanation in the frequent questions and demands which English Independency put to the New England churches concerning church usage and discipline, and in the intense interest with which New England waited the outcome of the constitutional struggle in England between King and Parliament.

When the great controversy broke out in England between Presbyterians and Independents, the fortunes of Massachusetts (who felt every wave of the struggle) and of New England were in the balance. Presbyterians in England proclaimed the doctrine of church unity, and of coercion if necessary, to procure it; the Independents, the doctrine of toleration. Puritans, inclining to Presbyterianism, were disturbed over reports from the colonies, and letters of inquiry were sent and answers returned explaining that, while the internal polity of the New England churches was not far removed from Presbyterianism, they differed widely from the Presbyterian standard as to a national church and as to the power of synods over churches, and that they also held to a much larger liberty in the right of each church to appoint its officers and control its own internal affairs. At the opening of the Long Parliament (1640-1644), many emigrants had returned to England from the colonies, and, under the leadership of the influential Hugh Peters, had given such an impetus to English thought that the Independent party rose to political importance and made popular the "New England Way." The success of the Independents brought relief to Massachusetts, yet it was tinctured with apprehension lest "toleration" should be imposed upon her. The signing of the "League and Covenant" with England in 1643 by Scotland, the oath of the Commons to support it, and the pledge "to bring the churches of God in the three Kingdoms to the nearest conjunction and uniformity in religion, confession of faith, form of church government and catechizing" (including punishment of malignants and opponents of reformation in Church and State), carried menace to the colonies and to Massachusetts in particular. The supremacy of Scotch or English Nonconformity meant a severity toward any variation from its Presbyterianism as great as Laud had exercised.[c]

In 1643 Parliament convened one hundred and fifty members[d] in the Westminster Assembly to plan the reform of the Church of England. Their business was to formulate a Confession which should dictate to all Englishmen what they should believe and how express it, and should also define a Church, which, preserving the inherent English idea of its relation to the State, should bear a close likeness to the Reformed churches of the Continent and yet approach as nearly as possible both to the then Church of Scotland and to the English Church of the time of Elizabeth. The work of this assembly, known as the Westminster Confession, demonstrated to the New England colonists the weakness of their church system and the need among them of religious unity.[e]

Many among the colonists doubted the advisability of a church platform, considering it permissible as a declaration of faith, but of doubtful value if its articles were to be authoritative as a binding rule of faith and practice without "adding, altering, or omitting." Men of this mind waited for controversial writings,[f] to clear up misconception and misrepresentation in England, but they waited in vain. Moreover, the Puritan Board of Commissioners for Plantations of 1643 threatened as close an oversight and as rigid control of colonial affairs from a Presbyterian Parliament as had been feared from the King. Furthermore, a Presbyterian cabal in Plymouth and Massachusetts, 1644-1646, gathered to it the discontent of large numbers of unfranchised residents within the latter colony, and under threat of an appeal to Parliament boldly asked for the ballot and for church privileges. In view of these developments, nearly all the colonial churches, though with some hesitation, united in the Synod of Cambridge, which was originally called for the year 1646.

In the calling of the synod Massachusetts took the lead. Several years before, in 1643, the four colonies of Plymouth, Massachusetts, Connecticut, and New Haven had united in the New England Confederacy, or "Confederacy of the United Colonies," for mutual advantage in resisting the encroachments of the Dutch, French, and Indians, and for "preserving and propagating the truth and liberties of the gospel." In the confederacy, Massachusetts and Connecticut soon became the leaders. Considering how much more strongly the former felt the pulsations of English political life, and how active were the Massachusetts divines as expositors of the "New England way of the churches," the Bay Colony naturally took the initiative in calling the Cambridge Synod. But mindful of the opposition to her previous autocratic summons, her General Court framed its call as a "desire" that ministerial, together with lay delegates, from all the churches of New England should meet at Cambridge. There, representing the churches, and in accordance with the earliest teachings of Congregationalism, they were to meet in synod "for sisterly advice and counsel." They were to formulate the practice of the churches in regard to baptism and adult privileges, and to do so "for the confirming of the weak among ourselves and the stopping of the mouths of our adversaries abroad." During the two years of unavoidable delay before the synod met in final session, these topics, which were expected to be foremost in the conference, were constantly in the public mind. Through this wide discussion, the long delay brought much good. It brought also misfortune in the death of Thomas Hooker in 1647, and by it loss of one of the great lights and most liberal minds in the proposed conference. Nearly all the colonial churches[g] were represented in the synod. When, during its session, news was received that Cromwell was supreme in England, its members turned from the discussion of baptism and church-membership to a consideration of what should be the constitution of the churches. The supremacy of Cromwell and of the Independents who filled his armies cleared the political background. All danger of enforced Presbyterianism was over. The strength of the Presbyterian malcontents, who had sought to bring Massachusetts and New England into disrepute in England, was broken. Since the colonists were free to order their religious life as they pleased, the Cambridge Synod turned aside from its purposed task to formulate a larger platform of faith and polity.