How to be Saved From a K’peida:
A chasid once came to Rav Yaakov Aryeh of Radzimin zy”a and related that he had insulted a certain Admor in Poland. This Admor was known as a big “kapdan” who placed curses upon those who opposed him, and many people had suffered as a result of his k’peidos. He thus asked Rav Yaakov Aryeh what he could do to protect himself.
The Rebbe quoted this verse to him and said, “Think of the Admor like the tail of a snake. If you consider him to be nothing more than a tail, he will turn into a stick, and he will be unable to harm you.”