To broach the subject of religion, nothing beats a trip to Israel.
As you know, the country is an actual Holy Land emanating an undefinable atmosphere of religion and spirituality. Almost all religions are represented in Israel. Jews are the largest in number. They account for more than 75% of the population. Muslims account for around 17%, while other religions are just a token number. For instance, Christians represent only 2%. There are also quite a few lesser known religions, such as the Druze faith, an Islamic sect; the Baha'i faith, Karaite Judaism with around 15,000 believers, Ethiopian and Coptic Christans, Melkites or even Samaritans, of which there are only about 800 today.
To be Jewish, you have to be born of a Jewish mother. It is very difficult to convert to Judaism. Aside from marriage, not all Rabbis will agree to converting a person. The rules which Jews must absolutely abide by, are listed in the Torah. Of the most essential rules such as being circumcised or eating Kosher, keeping the Sabbath is one of the most important. Saturday is the day Jews consider Holy. This corresponds with the day God ended His work. Warning: at that time of the week, life either slows down or comes to a complete standstill. As from 4 p.m. on Friday until 7 p.m. on Saturday, finding transport will be more difficult and hardly any shops will be open. Take advantage of this opportunity to visit museums or religious sites. They stay open, and it's a good way to avoid the crowds.