Britain's Queen Elizabeth II had a "remarkable Christian faith" and referred to Jesus as her "anchor and role model", the Bishop of London has said.
Sarah Mullally outlined the queen's dedication to her beliefs during an address at a memorial service held at St Paul's Cathedral in London this evening.
Some 2,000 members of the public attended the 6pm service after securing a limited selection of wristbands, along with British Prime Minister Liz Truss.
Speaking to those present, the bishop said: "Her Majesty had a remarkable Christian faith, about which she had increasingly spoken in recent years, referring to Jesus Christ as her anchor and role model.
"If Christ was her anchor, her husband, the late Prince Philip was, in her own words, Her Majesty's 'strength and stay'. Yet even in the depths of her own mourning we saw once again her courage and her instinct for putting the needs of others first."
Music played before the service included Solemn Prelude 'In Memoriam' from For The Fallen by composer Edward Elgar while hymns sung included All My Hope On God Is Founded and O Thou Who Camest From Above.
Ms Truss gave a bible reading from Romans 14.7-12 and was joined by London City Lord Mayor Vincent Keaveny.
Ahead of the service, a hundreds-strong queue formed, winding from St Paul's to beyond the Tube station streets away.
The prayer service included the first public rendition in Britain of the national anthem "God Save The King".
After 70 years of being dedicated to the queen, the anthem was sung in St Paul's Cathedral to reflect the accession to the British throne of King Charles III.
Buckingham Palace earlier announced that a period of royal mourning will be observed across the UK from today until seven days after the funeral of Queen Elizabeth.
The queen died yesterday at Balmoral Castle in Scotland, aged 96.
The palace said royal mourning will be observed by members of the royal family, royal household staff and representatives of the royal household on official duties, together with troops committed to ceremonial duties.
Royal residences - including The Queen's Gallery and the Royal Mews at Buckingham Palace, and The Queen's Gallery in Edinburgh - will close until after the funeral.
Balmoral Castle and Sandringham House, the queen's private estates, will also close for this period.
Hillsborough Castle, the monarch's official residence in Northern Ireland, will also be closed.
