Christians must never lose hope and should remind themselves that God loves them even at their worst, Pope Francis said.

God's love provides "security" both in difficult moments and even when "I have done something terrible and evil," the Pope said during his weekly general audience.

"No one can take this security from us. We must repeat it like a prayer: God loves me. I am sure that God loves me!" he said.

Among the thousands of pilgrims present at the Paul VI audience hall were numerous student groups from Europe, including several children's choirs from Italy and Spain.