The Catholic church cannot actually be seen with the naked eye, so we can't look at a building and say it is Catholic. In fact, the building is just a place to worship. We also must understand that the word "Church" doesn't refer to the actual building, but to the people.we see that whenever Jesus spoke about salvation, it was only, and only through Him. So, what does it mean to be Catholic? First of all, it's not going to service on Sunday (Which is very important of course). Going to service on a Sunday morning doesn't make you a christian, just like going to McDonald's doesn't make you a Hamburger. Secondly, it's not about water baptism (which is extremely important too) because the Apostle Paul said that Christ didn't send him to baptise, but to preach the Good News. Thirdly, it's not about turning over a new leaf. If that was the case, everyone could "improve" themselves here or there, but they would still have many imperfections. Fourthly, it's not about abstaining from sin. To be honest, we all sin each and every day. We all make mistakes, we all sin in thought, deed and action...each and everyday! So, if it's not about attending a service...not about getting baptised...not about giving up our old habits (which can be many!), then what is it? How do I join the Catholic Church. The answer is really simple. Christ has died and made the way for everyone to join. To enter you must simply: believe in the finished work of the cross. A patron saint medal is usually worn as pendant on necklace or chain. Patron saint medal was introduced to honor the Christian martyrs.