Q
Don’t Aleph, B, A, and some eight other manuscripts have the Greek word for “sins” (harmatia) in James 5:16? (The Textus Receptus, the KJV, and the NKJV have “faults.”)

A
Manuscripts Aleph, B, A, P, as well as Scrivner’s a, c, d, and Tregelles 13, do say “sins.” There is also a citation by Ephraem the Syrian that says “sins.” However, uncials K, L, 049, cursives 322, 323, 1846, 2298, and the majority of Greek manuscripts say the word “faults.” Even textual critics like Griesbach and Alford retain the word “faults” in their text.

I would direct any reader who is looking at manuscript evidence and trying to determine what manuscripts to trust, to read Codex B and Its Allies by Herman Hoskier. Hoskier did an extensive collation of these corrupt uncial manuscripts that read “sins” in that reading (Aleph and B et al.). He proved, beyond a shadow of a doubt, that the manuscripts underlying new versions, like the NIV and NASB, are totally corrupt. When you compare Vaticanus (B) and Sinaiticus (Aleph) with each other, in the gospels alone, they disagree with each other three thousand times. So, if almost all of the manuscripts in the world say “faults” and a handful of corrupt manuscripts that do not even agree with each other, say “sins,” it is evident that the body of Christ throughout history has rejected these old uncials. Because these manuscripts were not copied, we have the verdict of history against them.