Since — Since I first began to be a prophet, I have faithfully discharged my office, and that with warmth and zeal. Spoil — I have prophesied that violence and spoil was coming. Because — Because of that scorn and derision with which they treated him.
Related Commentaries of Jeremiah 20:8
Jeremiah 20:8
8 For since I spake, I cried out, I cried violence and spoil; because the word of the LORD was made a reproach unto me, and a derision, daily.