Luke 3:14

Soldiers were able because of their position to threaten people with reprisal to extort money from them. Exactly who these soldiers were is unclear, but it is also unimportant. Greed appears to have been a special temptation for them since the wages of soldiers were low. Therefore John called on them to demonstrate contentment.

Luke 3:12-14 help us see that certain temptations are more prominent in certain occupations than others. However material possessions were a source of temptation to all these people, as they still are today.