According to scripture, none of them ever met Jesus.
I was a JW for 20 years and I never knew this! I thought they were all Apostles! Paul knew of Jesus through his roadside conversion on the way to Dimascus after Jesus was already dead, and Mark and Luke were disciples of Peter and Paul.
I used to critize people of in other religions all the time for not knowing anything about their Bibles. Talk about the pot calling the kettle black. Someone out there please tell me I wasn't the only biblically-challenged-know-it-all in the orginization.