"Judeo-Christian moral standards are like God’s instruction manual for ... the best operation for human society," said the attorney general.
Investigators said the fire that gutted the Paris cathedral may have been started by a malfunctioning electrical system or smoldering cigarette.
The intimate service in the cathedral's side chapel will be limited to roughly 30 people, media included.
A visit to "Mars," Notre Dame, and a young climate activist meets the Pope in this week's images.
Thousands of bees in three hives atop the famed cathedral will live to buzz another day.
Monsignor Patrick Chauvet, the cathedral's chief priest, wants to build an "ephemeral" building on the Notre Dame's esplanade while construction takes place.
Experts said the ambitious timeline appears insufficient for such a massive operation.
The wealthiest families and companies in France vowed to use their riches to restore the fire-damaged Paris cathedral.
"I love you, Paris," Pinault's wife, actress Salma Hayek, wrote on Instagram.
Although much of the woodwork burned, other parts of the structure survived the massive blaze.