It is believed that biblical association with the number 11 has to do with chaos and disorder. It is often seen paired with references to the chaos and disorder surrounding the end of time.
There are several books of the Bible whose 11th chapter and 11th verses reference events that have come to be associated with the end of times. These include Isaiah 11:11, Ezekiel 11:11, Daniel 11:11, and Revelation 11:11. In Genesis 11, man rebelled against God and built the Tower of Babel. John recorded 11 promises in his gospel, while in the book of Revelation he saw and recorded 11 things corresponding with God's final judgement.