VATICAN CITY - Pope Benedict XVI bestowed his final Sunday blessing of his pontificate on a cheering crowd in St. Peter's Square, explaining that his waning years and energy made him better suited to the life of private prayer he soon will spend in a secluded monastery than leader of the Roman Catholic Church.
On Thursday evening, the 85-year-old German-born theologian will become the first pope to have resigned from the papacy in 600 years.
Sunday's noon appearance from his studio window overlooking the vast square was his next-to-last appointment with the public of his nearly eight-year papacy. Tens of thousands of faithful and other admirers have already asked the Vatican for a seat in the square for his last general audience Wednesday.
Perhaps emotionally buoyed by the warm welcome, thunderous applause and the many banners reading "Grazie" (Thanks) held up in the crowd estimated by police to number 100,000, Benedict looked relaxed and sounded energized, in sharp contrast to his apparent frailty and weariness of recent months.
Giving greetings in several languages, he gratefully acknowledged what he said was an outpouring of "gratitude, affection and closeness in prayer.
In a strong and clear voice, Benedict told the pilgrims, tourists and Romans in the square that God had called him to dedicate himself "even more to prayer and meditation," which he will do in a monastery being renovated for him on the grounds behind Vatican City's ancient walls.
"But this doesn't mean abandoning the church," he said, as many in the crowd looked sad at his approaching departure. "On the contrary, if God asks me, this is because I can continue to serve it (the church) with the same dedication and the same love which I have tried to do so until now, but in a way more suitable to my age and to my strength."