Final answer:
Luke, chapter 21, verse 20 states that when you see Jerusalem surrounded by armies, its desolation is near.
Step-by-step explanation:
According to Luke, chapter 21, verse 20, it states: 'When you see Jerusalem surrounded by armies, then you will know that its desolation is near.' This verse refers to a warning given by Jesus about the destruction of Jerusalem, which eventually took place in 70 AD.