In this chapter, The prophet is consulted by some of the elders of Israel. He is instructed by God what answer to give them. He must, signify God’s displeasure against them. He must show them what just cause he had for that displeasure, by giving them a history of God’s grateful dealings with their fathers and their treacherous dealings with God. Notice the repeated mention of Sabbaths being a sign between God and His people. Also recognize the anger of God when they are polluted.