What happened to them, and how were they once used? Straining my mind to sound archaic, I came up with the following:
Dost thou thinkest thou can escape thy sins?
Bringeth me my armor and favorite sword.
I’d like to use these suffixes intelligently, so my questions are, how are ‑est and ‑eth properly appellated in conjugations, and when and why did they disappear?