I think Ben is testing Juliette. Juliette says it herself, "Ben knew where they were going" If Ben wanted those people dead, Why on Earth would he send HIS people to get Juliette who had already betrayed him resulting in the deaths of several Others

__________________
"John: Is that some sort of code?
Ben: No John, we don't have a code for 'There is a man in my closet with a gun to my daughter's head' but obviously we should."