When you become the fly in satan's ointment

John 10:10 KJV

10The thief cometh not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly.

Remember the movie Die Hard, released in1988 starring Bruce Willis as the NYPD detective John McClane who becomes a one man army against a group of terrorists. Well in the movie, McClane is asked by the head terrorist in charge, Gruber, who are you then and he replies "Just a fly in the ointment, Hans. The monkey in the wrench. The pain in the…" This was his way of announcing his presence and warning Gruber of the problem he is about to become for him and his jolly band of criminals. Needless to say, Gruber was none too happy about this announcement and even more unhappy when his warning came to pass.  Because as he was soon to discover, once a fly has gotten in that ointment, you have to throw the whole thing out.