Mark Wahlberg has revealed the cornerstone of his life in a new interview – his Catholic faith.

“It’s the most important part of my life. I don’t try to push it on anybody, and I don’t try to hide it,” the Lone Survivor actor, 42, told Parade magazine.

Wahlberg takes being an Irish Catholic so seriously that he goes to Mass twice on Sunday whenever possible.

“If the kids are good, I’ll have doughnuts for them at 6:30 in the morning, and I’ll say, ‘You guys gotta let Mommy sleep in!’ I’ll go to church at 7:30 and everybody will be eating breakfast when I come home,” the actor, who has four children with wife Rhea Durham, said.

“Then we’ll go to church again at 10:30, if things aren’t too hectic,” he continues. “Or if one of the kids has a game we’ll watch them play. It’s a nice family day.”

Wahlberg also boasted of a new role he’s taken on in 2013 — high school graduate.

The 42-year-old, who dropped out of school in 9th grade,  told the magazine “I didn’t want my kids saying, ‘You didn’t finish school, why do we need to?’ ”

Wahlberg’s latest film, “Lone Survivor,” is due in theaters on Christmas day.