I've heard of many Christians doing this but have yet to find a scriptural basis for it. In fact I was reading through the rest of Isaiah this morning and came across this: Isaiah 65:2-5 All day long I have held out my hands to an obstinate people, who walk in ways not good, pursuing their own imaginations— 3 a people who continually provoke me to my very face, offering sacrifices in gardens and burning incense on altars of brick; 4 who sit among the graves and spend their nights keeping secret vigil; who eat the flesh of pigs, and whose pots hold broth of impure meat; 5 who say, ‘Keep away; don’t come near me, for I am too sacred for you!’ Such people are smoke in my nostrils, a fire that keeps burning all day. I have read other books concerning spiritual warfare and most authors say that sage burning for house cleansing can actually attract demonic spirits. This would make sense because you are using something in the place of God instead of using the authority given to us to cast out anything evil in Jesus' name. IMO, house cleansing is weird to begin with. Why give something attention that may or may not be there? Has anyone had their house blessed or cleansed? Thoughts?