Charles H. Spurgeon on Psalms 119:136

Rivers of waters run down mine eyes, etc. David's afflictions drew not so many tears from him as the sins of others; not his banishment by his son, as the breach of God's law by the wicked. Nothing went so to his heart as the dishonour of God, whose glory shining in his word and ordinances, is dearer to the godly than their lives. Elijah desired to die when he saw God so dishonoured by Ahab and Jezebel. The eye is for two things, sight and tears: if we see God dishonoured, presently our eyes should be filled with tears. William Greenhill, 1591-1677.