Three very distinct revelations by the Holy Spirit led me to start witnessing for Jesus full time.
Mary K Baxter's Testimony - A Divine revelations of Hell
I have been criticized often for recommending Baxter's testimony. This is my response.
You can read or download Mary K Baxter's testimony for free from:
http://spiritlessons.com/Mary_K_Baxter_A_Divine_Revelation_of_Hell.htm