1. One kind old man (1-21)
The story of the Levite and his concubine gives us a vignette of life in the times of the judges. Levites were the religious leaders, but this man's main interest seems to be eating and drinking and pursuing small pleasures. On his way home with his concubine, he stopped overnight in the Benjamite city of Gibeah. The old man he met reminds us of Lot (Genesis 19).
2. The sin of Sodom (22-30)
The tragic event that happened in Gibeah was similar to the event in Sodom that brought God's judgment and turned Sodom into a smoldering furnace. The only difference was that what happened in Gibeah was worse! The writer of Judges is showing us the depth of moral corruption to which the shepherdless people of Israel had sunk.
Application: Lord, when people follow their sinful human nature, it leads them into the depths of corruption. Raise up shepherds and Bible teachers who can lead us out of our moral cesspool and back to you.
One Word: Such a thing should not be done