Q. 1. What does "Apostolic Tradition" mean? I hear those two words used quite often in the Catholic Church.
A. 1. According to the Compendium of the Catechism of the Catholic Church, "Apostolic Tradition" means:
"Apostolic Tradition is the transmission of the message of Christ, brought about from the very beginnings of Christianity by means of preaching, bearing witness, institutions, worship, and inspired writings. The apostles transmitted all they received from Christ and learned from the Holy Spirit to their successors, the bishops, and through them to all generations until the end of the world."
The Catholic Church bases its teachings on two things, the Holy Scripture and its Apostolic Tradition.
Saint Paul said: "So then, brothers and sisters, stand firm and hold fast to the traditions that you were taught by us, either by word of mouth or by our letter." [2 Thess. 2:15] The Holy Scriptures affirms that the Apostolic Tradition must stand side by side to the Holy Bible. They supplement each other.