Daily Mitzvot

Do not swear an oath of expression over falsehood.

 “Do not swear falsely by My name” Vayikra 19:12 

This is called an oath of expression.

A person is punishable if he takes this oath over things that it is possible to do, whether in the future or the past.

For example-

“that I ate “or “I threw a stone into the sea “or “this person spoke with that person “or

“that I did not eat “or that “I did not throw the stone into the sea” or “this person did not speak to that person”

Regarding the future for example - “that I shall eat “or “I shall not eat” or

“that I shall throw a stone into the sea “or “I will not throw…”

If a person swore regarding any of these statements he violates this prohibition.

This applies in all places at all times for men and women.