Grief to my sorrow - Baruch’s sorrow is caused by the sinfulness of the Jewish nation, to which God adds grief by showing how severely it will be punished.
I fainted in - Or, “am weary with” Psalms 6:6.
Related Commentaries of Jeremiah 45:3
Jeremiah 45:3
3 Thou didst say, Woe is me now! for the LORD hath added grief to my sorrow; I fainted in my sighing, and I find no rest.