Numbers 16:45,46

They fell upon their faces To beg mercy for the people; thus rendering good for evil. Put on incense Which was a sign of intercession, and was to be accompanied with it. Go unto the congregation He went with the incense to stir up the people to repentance and prayer, to prevent their utter ruin. This he might do upon this extraordinary occasion, having God's command for his warrant, though ordinarily incense was to be offered only in the tabernacle.