The business website of Simplicity Online has a web page that states the following: "We are developing an application using the King James Version of the Bible. We will be posting useful information that we gather from this development process from time to time. Below is a JavaScript array with all the old words ending in the “eth” suffix. These words can be converted to modern equivalents with -(e)s."
The Java script is found at Simplicity Online .
We have taken their information and created a .PDF file that is 2 1/2 pages long that lists the 603 words that end in -eth in the King James Bible and made it available by scrolling to the bottom of the page here --> KJV ETH PDF .