Principles of the Christian Churches - predecesors of the UCC

From the The YEAR-BOOK OF THE CONGREGATIONAL AND CHRISTIAN CHURCHES in 1930:

THE PRINCIPLES AND ORGANIZATION OF THE CHRISTIAN CHURCH
(for those studying our UCC history, this is the group that joined in union with the Congregational Churches in 1931)

The following Principles are generally accepted and proclaimed by the
Christian churches. There is no uniform phrasing of them, however.

PRINCIPLES

I. Christ the only Head of the Church.
II. Christian a sufficient name for the followers of Christ.
III. Christian character the only basis or test of fellowship and membership.
IV. The Holy Scriptures our only creed.
V. Individual interpretation of the scriptures, the privilege and duty of
every believer.
VI. The union of all the followers of Christ.

These six Principles have frequently been summed up in this one basic
principle :

"The Church of Christ is One; it embraces all those who have been accepted
of Christ as his real disciples; and, in its whole and in its parts, it should be so
organized, named, and governed as to include all and exclude none of those
whom Christ has so accepted."