# Jesus said to them, "When  I sent you ... did you lack anything?" They answered, "Nothing."

The word "you" refers to the apostles. Jesus uses a question so that they would remember how God provided what they needed in the past.

# a purse

A purse is a bag for holding money. Here the word is used to refer to money.

# a bag of provisions

"a travelers' bag" or "a bag of food"

# Nothing

"We did not lack anything" or "We had everything we needed"