Alcuin
Catena Aurea · Johannesevangelium 2
And found in the temple those that sold oxen and sheep and doves, and the changers of money sitting: And when he had made a scourge of small cords, he drove them all out of the temple, and the sheep, and the oxen; and poured out the changers’ money, and overthrew the tables; And said unto them that sold doves, Take these things hence; make not my Father’s house an house of merchandise. And his disciples remembered that it was written, The zeal of thine house hath eaten me up.
Zeal, taken in a good sense, is a certain fervour of the Spirit, by which the mind, all human fears forgotten, is stirred up to the defence of the truth.