You can log into the account for your number and click view usage and then view message details for the number. The actual text of the message you would need a court order to retrieve. Mary
Mary is completely right about how you can view the number online under your usage. As for the actual deleteing part....
How do I retrieve text and picture messages after I have deleted them from my wireless phone?
At this time, there is not way to retrieve a text, picture, or video message without a court ordered subpoena. If you do have this document, please contact Verizon Wireless with your request at: