Symbols

"If you make an altar of stones for me, do not build it with dressed stones, for you will defile it if you use a tool on it." (Shemot 20:25) So, how was the altar made?

Shalom aleichem Rabbi Lauffer. If one has a havdalah candle holder with the words "borei me'orei ha'eish" written on it in Hebrew, would it be proper or improper to use it as a havdalah candle holder, considering wax from the dripping candle covers the letters and also wine gets on it? Thanks lot.

What is the significance in Judaism of the colors blue and white? Many talit are white with blue stripes. The Israeli flag is white with blue stripes and a star of David. It seems like a common color theme. Is there any significance? Or did it evolve in popular culture over time like red and green for Christmas?

My six year old son asked me why some Hebrew letters have an “end letter” and others don’t. Thank you so much for your reply and for all your time that you put into answering all these questions!

There is a special hand greeting done in the Star Trek series by Mr. Spock to "live long and prosper". I was told it’s a Hebrew blessing and I have also seen it on plaques and souvenirs in Israel. Would you please help me learn more about it? Thanks.

I would like to know the source of the evil eye symbol and red strings that are sold as jewelry in Judaica stores. Is it permissible to wear them? Should it remind the wearer of something? Is it considered in any way to be idol worship?

What does the palm tree signify in Judaism?