“I think it's very important to be able to see the funny side of life and its joyful dimension and not to take everything too tragically. I'd also say it's necessary for my ministry. A writer once said that angels can fly because they don't take themselves too seriously. Maybe we could also fly a bit if we didn't think we were so important.”–Pope Benedict XVI
Based on Friendly Defenders:
Why does the Catholic Church have priests? After all, aren't ALL Christians priests? In 1 Peter 2:9 it says "You are a chosen people, a royal priesthood."
The Jews were also a "nation of Priests," yet they still had a ministerial priesthood. The early Christans followed the same pattern.
"So I exhort the presbyters among you, as a fellow presbyter and wtiness to the sufferings of Christ....Tend the flock of God in your midst..." 1 Peter 5:1-2
Priests, or "presbyters," minister to the church through preaching and offering the sacraments.
Related verses: Lev. 21:10-12; 1 Cor.12:28; Acts 6:6, 13:3, 20:28; John 21:15-17, Tit. 1:5