CLRLE's embedded Voyeur Tools were used to search for the word "saith" in the 1641 corpus, and below is a chart showing the frequency and distribution of "saith" in the corpus by Collection for 1) Bysse, 2) Commonwealth, 3) Dublin Originals, 4) Examination, 5) Information, 6) Other and 7) Waring Copies:

Below is an embedded widget showing the Keywords in Contect for "saith" in the Commonwealth Depositions Collection: