Even though the burning of sage is a common practice in today’s world, it is a practice as old as time and has passed through many generations and civilizations.
Sage burning, or smudging, is a touchy topic among Christians. It all stems from the fact that spirituality’s definition and meaning are extremely ambiguous.
Some Christians believe the practice is harmless, others consider it occult.Burning sage is neither promoted nor clearly prohibited. The Bible cites the burning of incense made from various herbs.
Smudging is highly spiritual. It's hard to distinguish between rituals that are desirable to GOD and those that are sinful and so unsuitable for a Christian.
The Bible does not include any formal prohibitions against the burning of sage. There is no indication in the Scriptures that you will go to hell if you do it.