Israel has the most devout Jews, with one in every six Jews, according to a study published Monday.
The study, conducted by the Jewish Agency, found that a person is Jewish if he or she follows a Jewish law of recitation of the Ten Commandments and the Jewish Sabbath.
In the last year, Israel’s rabbis have published guidelines that would allow rabbis to refuse services to gay couples.
The country’s rabbinical court recently struck down a ban on same-sex marriage, ruling that it violates the rights of individuals to decide their own religious identity.
The number of people who identify as Jewish in Israel has increased from 6 million in 2005 to 13 million in 2016, according a 2015 Pew Research Center survey.
In 2015, the country’s chief rabbi, Rabbi Yitzhak Yosef, said that he expected the number of Jews to increase to 25 million by 2020.