Question
In the Tanakh, there is a concept of the Holy Spirit. For example: "the spirit of God dwelled on David strongly". Is there the power of the Holy Spirit according to Judaism? Also, is there the power of the "evil spirit"?  

Question
The mezuzah on the door to my room was put up many years ago. I’m planning to change the case on the mezuzah for a new and decorative one that I received as a present. I was wondering if perhaps the writing on the mezuzah also should be checked when I replace the case. It’s been a long time, but I don’t really have any reason to suspect there’s a problem. Thanks for this wonderful service.

Question
Can you please explain why, as I have learned in the past, that there are, apparently, TWO First Mitzvah's......I recall learning that Abraham was told that "Circumcision" was the First Mitzvah and then I learned that The first mitzvah given to the Jewish people before they even left Egypt was to sanctify the new moon and keep a calendar" Can you tell me what is correct.....are their TWO First Mitzvah's and, if so, what is the meaning of this?

Question
Shalom, I have been reading the Mishneh Torah, the negative commandments. I am an artist, and learned to not make any human figure from clay. I am wondering if keeping dolls (since they too are human figure) is also something I need to get out of my house. Thank you so much for your time.

Question
Sometimes I travel by airplane with a carry-on only and no checked luggage. Included in my carry-on are my tefillin and siddur. Airport regulations prohibit leaving luggage unattended or with a stranger. What is one supposed to do if they have to use the restroom at the airport, but their tefillin and siddur are in their luggage that must be kept with them and therefore brought into the restroom?

Question
HI. I recently made a car rental reservation for an upcoming trip. I only have to pay when I pick up the car and can cancel the reservation before that. I then found a lower price with another company. Can I make a reservation with the 2nd company but still keep the first one, just in case there is an issue with the 2nd company when I get there?