Sri Lanka, Dec. 25 -- Pope Leo has told Christians that the Christmas story should remind them of their duty to help the poor and strangers.

In his Christmas Eve sermon, the pope said the story of Jesus being born in a stable because there was no room at an inn showed followers that refusing to help those in need was tantamount to rejecting God himself.

Leo, who has made care for immigrants and the poor key themes of his early papacy, said Jesus' birth showed God's presence in every person as he led the world's 1.4 billion Catholics into Christmas at a mass in St Peter's Basilica.

"On earth, there is no room for God if there is no room for the human person. To refuse one is to refuse the other," said the pope during the solemn service,...