II. Verse 13 gives the pleading of Jehovah. The mission of the prophets was God's reply to Israel's rebellion, and was equally the sign of His anger and of His love. The more sin abounds, the more does God multiply means to draw back to Himself. The deafer the ears, the louder the beseeching voice of His grieved and yet pitying love. His anger clothes itself in more stringent appeals and clearer revelations of Himself before it takes its slaughtering weapons in hand. The darker the background of sin, the brighter the beams of His light show against it. Man's sin is made the occasion for a more glorious display of God's character and heart. It is on the storm-cloud that the sun paints the rainbow. Each successive stage in man's departure from God evoked a corresponding increase in the divine effort to attract him back, till 'last of all He sent unto them His Son.' In nature, attraction diminishes as distance increases; in the realms of grace, it grows with distance. The one desire of God's heart is that sinners would return from their evil ways, and He presses on them the solemn thought of the abundant intimations of His will which have been given from of old, and are pealed again into all ears by living voices. His law for us is not merely an old story spoken centuries ago, but is vocal in our consciences to-day, and fresh as when Sinai flamed and thundered above the camp, and the trumpet thrilled each heart. III. The heavier sin that followed the divine pleading. That divine voice leaves no man as it finds him. If it does not sway him to obedience, it deepens his guilt, and makes him more obstinate. Like some perverse ox in the yoke, he stiffens his neck, and stands the very picture of brute obduracy. There is an awful alternative involved in our hearing of God's message, which never returns to Him void, but ever does something to the hearer, either softening or hardening, either scaling the eyes or adding another film on them, either being the 'savour of life unto life or of death unto death.' The mission of the prophets changed forgetfulness of God's 'statutes' into 'rejection' of them, and made idolatry self-conscious rebellion. Alas, that men should make what is meant to be a bond to unite them to God into a wedge to part them farther from Him! But how constantly that is the effect of the gospel, and for the same reason as in Israel--that they 'did not believe in the Lord their God'!