Has somebody entrusted with confidential information and have you passed on that info to somone else?  Have we qualified this betrayal when we share this confidence with someone else using these words thinking this will make the betrayal ok?  "Now please do not tell anyone else because I was told this in the strictest of confidence" If you can't be trusted what makes you think the person you are revealing this info to can be trusted as well.

 

Now if it was a matter of life and death and a person's life was at stake, that is one matter.  Then and only then should you betray a confidence and tell the correct person, i.e. Pastor/Rabbi  etc.

 

For an article from Aish.com  regarding Jewish Law and Confidentiality. (go to link to read entire article).   Below is a portion of the article.

 

Confidentiality is included in the with regard to the secular world, the category of professional ethics, such as the attorney-client privilege and the physician-patient relationship. We commonly assume that a doctor may not divulge information about a patient to a third party because of the unique role of the physician in society. In the secular world, confidentiality is included in the  o  Nevertheless, Judaism recognizes situations in which disclosure of confidential material is required.

 
The Torah writes: "Do not go as a tale-bearer among your people, do not stand idly by the blood of your neighbor..." (Leviticus 19:16). Why are these two apparently unrelated concepts included in one biblical command? Two reasons are given for the juxtaposition of the two phrases.

 
First, the spreading of "tales" about one's acquaintances is equated with shedding their blood, since serious harm may arise from the disclosure of private information. Engagements may be broken, relationships shattered, and business partnerships dissolved, all because of gossip. This is the reason for the almost absolute ban on rechilut (tale-bearing).