Did Greek weigh more heavily on Bible study than Latin historically, while it is the opposite today?

I have heard that students of Christian Theology study Latin for a better understanding the religion. I haven't heard about them learning Greek. Is it the same case for both Catholics and Protestants? Does it have something to do with the fact that the only country that still uses Latin is the Vatican? When reading the Bible on my own, I met more words originated from ancient Greek than from Latin. Is it my bias, because a lot of words from Latin have been absorbed into English? **Did Greek weigh more heavily on Bible study than Latin historically, while it is the opposite today?**