'Thief' in the Bible

“I assure you: Anyone who doesn’t enter the sheep pen by the door but climbs in some other way, is a thief and a robber.

A thief comes only to steal and to kill and to destroy. I have come so that they may have life and have it in abundance.

He didn’t say this because he cared about the poor but because he was a thief. He was in charge of the money-bag and would steal part of what was put in it.