Like few in our time, Kofi Annan would bring people together, put them at ease, and unite them towards a common goal for our common humanity.
President Nana Akufo-Addo of Ghana described him as a peaceful man who gave his life to defend the voiceless.
Pointing to his time at the helm of the UN, Guterres said Annan had an nearly mystical sense of the role of the UN as a force for good in a world of ills.
The statement also urged Ghanaians to uphold the values exhibited by the former UN Secretary General while he lived.
"He made the whole world understand promoting equality between men and women is not an issue of women only, but it's an issue for sustainable development", she said.
He said through the diplomacy of the late Kofi Annan, the United Nations brought peace to war-torn countries in Africa like Rwanda, Burundi, Democratic Republic of Congo, Cote d'Ivoire, Liberia and Sierra Leone.
According to her, when she was a child, their father used to tell her stories, and gradually as she grew up, she learnt to appreciate him deeply, especially when he started with his many services to the world.
In an address, Mr Guterres hailed Mr Annan, who served as the seventh UN Secretary-General between 1997 and 2006, as an exceptional global leader with a deep faith in the role of the UN as a force for good. He was aged of 80.
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He was awarded the Nobel Peace Prize in 2001 for helping to revitalise the global body, during a period that coincided with the Iraq War and the HIV/Aids pandemic.
"He was also someone virtually anyone in the world could see themselves in: those on the far reaching of poverty or by, conflict and despair who found in him an ally; the junior United Nations staffers following in his footsteps; the young person to whom he said until his dying breath 'always remember, you are never too young to lead - and we are never too old to learn".
President Akufo-Addo added that Mr. Annan was enthused about his Ghana Beyond Aid agenda.
Annan kept up his diplomatic work after leaving office, taking mediation roles in Kenya and Syria, and more recently heading an advisory commission in Myanmar on the crisis in Rakhine state.
He acted as a negotiator between the government and the opposition in Kenya after post-election violence at the end of 2007, leading to the formation of the Grand Coalition government.
As well as Guterres, the funeral was attended by representatives of the African Union, the West African bloc ECOWAS, and presidents from across Africa and beyond.
Others include Princess Beatrix, the former queen of the Netherlands, and her daughter-in-law Princess Mabel, who were close friends of Annan.