They said, Yahweh, the God of Israel, why has this happened in Israel, that there should be today one tribe lacking in Israel?
Then the Israelites sought the Lord more seriously (Judges 21:4). It seems strange that they built an altar at Bethel since they had recently offered sacrifices on the one before the tabernacle there (Judges 20:26). Perhaps they rebuilt or enlarged the altar at Bethel, or they may have built another one.