The Bible is a book of several genres. One of those genres is history, which focuses on the journey of the Hebrews toward establishing their nation and readying themselves for the Messiah.
In numerous places in their history, the Bible records God commanding the people to kill, kill, and kill some more. Are these battles and attacks really warranted? Is God excessively bloodthirsty? Or, as non-theists often claim, are these accounts evidence that God is not great, is not worthy of worship, or is a figment of their imagination.
This episode explains how Old Testament battles were appropriate in their force and frequency. It also gives a few different perspectives on how to interpret these stories--all of which conclude that God is indeed great.