GLASGOW, Scotland (CNS) — Celebrating Mass for tens of thousands of faithful, Pope Benedict XVI urged Catholics to promote the “wisdom and vision” of their religion in the public square.

A society that tries to do without religion ends up living in a self-destructive moral jungle, the pope said at a liturgy in Glasgow Sept. 16, his second stop in Scotland and the first leg of a four-day trip to Great Britain.

The crowd cheered the 83-year-old pontiff when he arrived at Bellahouston Park, just after a local police bagpipe band played “Amazing Grace.” The crowd had already been warmed up by Susan Boyle, the Scottish singing sensation, who said performing at the papal Mass was the fulfillment of a lifelong dream.

The pope landed earlier in the day in Edinburgh, where he met with Queen Elizabeth II and was treated to an official state welcome.