For the Korean version, see this. (Reposted in 2022; originally posted bilingually in Korean and English in 2019)
In Christianity, the God of Israel in the Old Testament (Hebrew Bible) is known as Jehovah. As the title of the article suggests, however, Yahweh is also the name of Israel’s God. Assuming that most Christians are unaware of how these two names became in use interchangeably, I will explain the names Jehovah and Yahweh.