2 Chronicles 26v16-19
But when he was strong, his heart was lifted up to his destruction: for he transgressed against the Lord his God, and went into the temple of the Lord to burn incense upon the altar of incense.
And Azariah the priest went in after him, and with him fourscore priests  of the Lord, that were valiant men:
And they withstood Uzziah the king, and said unto him, It appertaineth not unto thee, Uzziah, to burn incense unto the Lord, but to the priests the sons of Aaron, that are consecrated to burn incense: go out of the sanctuary; for thou hast trespassed; neither shall it be for thine honour from the Lord God.
Then Uzziah was wroth, and had a censer in his hand to burn incense: and while he was wroth with the priests, the leprosy even rose up in his forehead before the priests in the house of the Lord, from beside the incense altar.
1 Samuel 22v17
And the king said unto the footmen that stood about him, Turn, and slay the priests of the Lord: because their hand also is with David, and because they knew when he fled, and did not shew it to me. But the servants of the king would not put forth their hand to fall upon the priests of the Lord.