Always be prepared to make a defense to anyone who calls you to account for the hope that is in you.As that is the meaning of the above verse, are you ready to apologize? I have struggled with the rhetoric of Jehovah's Witnesses, missionaries of the Church of Jesus Christ of Latter-Day Saints, and sola Scripture fundamentalists because it is usually in a "context" of debating (the win/lose model). It would be more beneficial to my emotions just to "speak the Truth in love."1 Peter 3:15
With that in mind, from the website Our Catholic Faith, here is "An Open Letter To Non-Catholics", which explains why the Church is the "one, holy, catholic, and apostolic church" founded by Jesus Christ.
(Fedora Doff to Moneybags at A Catholic Life.)