Jeremiah 15:10
Woe is me, my mother, that thou hast borne me a man of strife and a man of contention to the whole earth! I have neither lent on usury, nor men have lent to me on usury; yet every one of them doth curse me. Woe is me, my mother, that thou hast borne me a man of strife and a man of contention to the whole earth! I have neither lent on usury, nor men have lent to me on usury; yet every one of them doth curse me.
Faithfully maintaining the truth makes God's servant a man of strife and a man of contention to the whole earth, opposed and cursed by those who oppose the message. The declaration about neither lending on usury nor having men lend to him on usury shows he had done his neighbors no such financial wrong, yet every one of them cursed him. The cry of woe over being born expresses the pain of being made a target for faithfully bearing God's message.
Luther applied this description to himself when threats and attacks on his honor came for proclaiming the truth, and he kept upholding it while expecting persecution. The more his enemies threatened him, the more his resolve to stand grew and his joy increased.