In his first "Urbi et Orbi" (to the city and the world) message, Francis also called for peace between Israelis and Palestinians, an end to the civil war in Syria, and political solutions to conflicts in several African countries.
The former Cardinal Jorge Bergoglio of Argentina also condemned the "iniquitous exploitation of natural resources" and urged everyone to be "guardians" of creation.
More top news
Across most of England and Wales it will be a clear, chilly night and Friday morning will start off cold but bright until cloud builds up.
Syrian Kurdish militia can be seen exchanging fire with Isis on the streets of Christian villages in rare footage obtained by ITV News.
The three-bedroom, mid-terrace former council house went for more than the guide price and was snapped up by an anonymous bidder in the UK.