"The ritual burning of herbs and herbal resins is common to many cultures in the world. From the rich frankincense of the Church and the Middle Eastern bazaar, to the heady incenses of Asia, to the raw energy of brush burning in many native cultures—the purification of space through this modality is a global phenomenon and one you can benefit from highly.
Burning sage is one of the oldest and purest methods of cleansing a person, group of people or space. While Native American sage burning is the most commonly recognized form of it today, it has nevertheless been a shared practice in other cultures too.
From the ancient Celtic druids who used sage as a sacred herb alongside Oak Moss for burning as well as medicinal purposes, to the Indigenous Peoples of the Amazon whose Palo Santo (sacred wood) sage burning ceremonies are still practiced to this day."
Source: https://www.movingtowardspeace.com/mtpblog/the-ancient-art-of-burning-sage.html