King Charles told the COP 28 summit that he is "praying with all my heart" that the COP28 summit, taking place in Dubai, would prove to be a "turning point" for the world's action against climate change.
He also appeared to conclude his speech with references to Genesis and humanity's origin from the earth itself.
"As part of this grand and sacred system, harmony with nature must be maintained. The earth does not belong to us, but we belong to the earth."
Genesis 2:7 describes how man was "formed from the dust of the ground" before God "breathed life" in.
His Majesty, invited to speak at the summit by the UAE's President Sheikh Mohammed Bin Zayed, was introduced on stage as "a true champion of the environment."
Charles announced: "I pray with all my heart that COP28 will be another critical turning point towards genuine transformational action," before he described how "alarming tipping points" were being reached.
The King spoke of countless communities he's seen across the Commonwealth whose loves and livelihoods are laid to waste.
He highlighted the devastation of cyclones on Vanuatu and Dominica, "unprecedented flooding" in India, Bangladesh, and Pakistan, decade-long droughts in East Africa, and the "worst wildfire season on record" in Canada.
He spoke of how the world was "carrying out a vast experiment of changing every ecological condition all at once, at a pace that far outstrips nature's ability to cope."