Acts 9:31

Acts 9:31 h` … evkklhsi,a … ei=cen … oivkodomoume,nh kai. poreuome,nh … evplhqu,neto {A}

The range and age of the witnesses that read the singular number are superior to those that read the plural. The singular can hardly be a scribal modification in the interest of expressing the idea of the unity of the church, for in that case we should have expected similar modifications in Acts 15:41 and Acts 16:5, where there is no doubt that the plural number evkklhsi,ai is the original text. More probably the singular number here has been altered to the plural in order to conform to the two later passages.