Charles H. Spurgeon on Psalms 69:9

For the zeal of thine house hath eaten me up. His burning ardour, like the flame of a candle, fed on his strength and consumed it. His heart, like a sharp sword, cut through the scabbard. Some men are eaten up with lechery, others with covetousness, and a third class with pride, but the master passion with our great leader was the glory of God, jealousy for his name, and love to the divine family. Zeal for God is so little understood by men of the world, that it always draws down opposition upon those who are inspired with it; they are sure to be accused of sinister motives, or of hypocrisy, or of being out of their senses. When zeal eats us up, ungodly men seek to eat us up too, and this was preeminently the case with our Lord, because his holy jealousy was preeminent. With more than a seraph's fire he glowed, and consumed himself with his fervour. And the reproaches of them that reproached thee have fallen upon me. Those who habitually blaspheme God now curse me instead. I have become the butt for arrows intended for the Lord himself. Thus the Great Mediator was, in this respect, a substitute for God as well as for man, he bore the reproaches aimed at the one, as well as the sins committed by the other.