[Dr. Eckleburg]

"Semper reformanda" refers to the fact that the church of Jesus Christ on earth is always being tested, burnished by the need to declare the truth against errors and that God's word is worth defending from the many superstitious assaults men love to inject into their worship.

As the Westminster Confession of Faith reminds us...

CHAPTER 25
Of the Chruch

V. The purest Churches under heaven are subject both to mixture and error;[10] and some have so degenerated, as to become no Churches of Christ, but synagogues of Satan.[11] Nevertheless, there shall be always a Church on earth to worship God according to His will.[12]

[Cronos]

Semper reformanda if you translate from Latin translates as “always being reformed” which is a good descriptio of the sola crowd, always rewriting scripture to their own image!

It is an apt description of the various meanderings and re-imaginings of the various groups that were formed out of the Reformation. The First groups like the Lutherans and Trad Anglicans stayed true to orthodoxy. Even Luther was looking for real reform, not tearing of the cloth.

Then came Calvin who shocked Luther and Zwingli who he detested.

Then came the Unitarians, Anabaptists etc. who he AND Calvin AND Zwingli detested -- but the floodgates had been opened, SEMPER REFORMANDA - ALWAYS RE-FORMING -- and this has led to various beliefs as weird as Mormons (who took the Baptist belief and twisted it further to a Great Apostasy), the OrthodPresbyterian Cult (OPC), Jehovah's Witnesses, Seventh Day Adventists, etc.

Always reforming is an apt term