"Nevertheless, we acknowledge the inward illumination of the Spirit of God to be necessary for the saving understanding of such things as are revealed in the Word." W.C.F. 1:6. Too, "the Old Testament in Hebrew" and "the New Testament in Greek…are to be translated into the vulgar [or common] language of every nation unto which they come…. I Cor. 14:6,9,11,12,24,27,28." W.C.F. 1:8.
Clearly, the above W.C.F. 1:8(u) insists on a truly-linguistic view of, and precludes any other (glossolalic-ecstatic!) notion about, I Cor. 14:6-28. Indeed, "the infallible rule of interpretation of Scripture, is the Scripture itself." W.C.F. 1:9. Consequently, "the Supreme Judge by Which all controversies of religion are to be determined…, can be no other but the Holy Spirit speaking in the Scripture!" W.C.F. 1:10.