Is Judaism a closed religion

Answer 1

Judaism has always accepted converts. Moses's wife was the daughter of a Midianite priest. Ruth, the ancestor of King David was a Moabite convert. Onkelos, the creator of the most important translation of the Hebrew Bible into Aramaic was a Greek or Roman convert. However, Judaism is not a missionary religion because it does not hold that it is the only path to righteousness, and because for much of the past 2000 years, converts to Judaism and sometimes those who oversee their conversion have been subject to serious consequences, including at many times the death penalty.