What does it mean to cross the valley of tears to Yilin?

Through the valley of tears to Yilin, this is a Christian song. Since the Chinese name follows the Lord. Elin's spiritual meaning is "bitter", and Elin means "sweet" in the Bible, where the 12 spring appears in Exodus. Mara and Elin are from Exodus chapter 15: Moses led the Israelites from the Red Sea to the Shur wilderness. They walked in the wilderness for three days and found no water. When you get to Mara, you can't drink the water there. Because the water is bitter, that place is called Mara. The people complained to Moses, "What shall we drink?" Moses cried to the Lord, and the Lord showed him a tree. He threw it into the water and it became sweet.