Since he is no longer running for re-election, President Joe Biden will be ending his administration and leaving the White House for good in January, and exiting with him will be first lady Jill Biden.

Realizing her time in power is drawing near its end, Jill Biden said her goodbyes on Thursday to a lunch gathering of other first ladies and gentlemen from around the globe, according to Arise News.

Biden addressed the gathering as one of several events on the sidelines of the United Nations General Assembly meeting in New York City this week.

Saying her goodbyes

Arise News highlighted the attendance at the luncheon of Senator Oluremi Tinubu, the first lady of Nigeria, along with other first ladies from African nations.

First lady Biden, who described the event as "impactful," noted that it would be her last to host as the spouse of the U.S. president, and spoke of the bonds she'd forged with others and accomplishments made toward goals like promoting peace and development in nations around the world.

"I appreciate you all for always coming for this gathering, I have a great feeling that I will be seeing more of you in my next chapter of life," Biden said, though it was unclear what she may have been referring to.

She added, "I wish you all the best as you all return to your various countries as it has come to my notice that many of you have a long way back home."

A focus on Ukraine and children

In her prepared remarks for the Summit of First Ladies and Gentlemen, Jill Biden singled out for special attention the first lady of Ukraine, Olena Zelenska, and recalled meeting her for the first time two years ago when she visited the war-torn Eastern European nation after Russia invaded it.

"The past several years have been a painful reminder that when children are in danger anywhere in the world, they are more vulnerable everywhere," Biden said. "But the reverse is also true. Seeing the plight of children at home helps us see the challenges that children face across the world -- and then we can share our resources and solutions to make all of them safer."

"Olena, we continue to admire your selfless courage. Amid such suffering at home, it would have been enough for you to just speak out for the people of Ukraine," she concluded. "But you chose to look beyond your borders, calling on world leaders to see our shared challenges with new clarity and boldness. We’re here to offer our continued love and support to you. We stand with Ukraine today and for the future."

Busy week at the U.N. General Assembly

Bidding farewell to her fellow first ladies on Thursday was not the full extent of Jill Biden's participation on the sidelines of the U.N. General Assembly gathering in New York City this week, however.

On Monday, Biden addressed an event focused on launching global partnerships to combat and reduce lead poisoning and make progress toward the goal of a "lead-free future" for children worldwide.

That same day, she also spoke at a U.N. event celebrating and promoting protections for the basic human rights of LGBTQI people and called for change in nations and cultures where such individuals still face discrimination and persecution from the government and others.

And on Wednesday, the first lady also delivered introductory remarks for her husband, President Biden, ahead of his address at the U.N. General Assembly Leaders' Reception dinner event at the Metropolitan Museum of Art in New York City.