Right from the beginning of the book of Isaiah he rails against Israel:
Hear, O heavens, and give ear, O earth: for the Lord hath spoken, I have nourished and brought up children, and they have rebelled against me.
The ox knoweth his owner, and the ass his master's crib: but Israel doth not know, my people doth not consider.
Ah sinful nation, a people laden with iniquity, a seed of evildoers, children that are corrupters: they have forsaken the Lord, they have provoked the Holy One of Israel unto anger, they are gone away backward.
He says that the God of Israel is taken up with wrath that he refuses to recognise the sacrifices made in his name:
- To what purpose is the multitude of your sacrifices unto me? saith the Lord: I am full of the burnt offerings of rams, and the fat of fed beasts; and I delight not in the blood of bullocks, or of lambs, or of he goats.
It appears what the people of Israel do not 'consider' despite their sacrifices is the law of the God of Israel:
- Hear the word of the Lord, ye rulers of Sodom; give ear unto the law of our God, ye people of Gomorrah.
Given the historical resonance of Sodom and Gommorah in the Bible this is no cheap insult he is hurling at the people of Israel. He goes on to say:
- Wash you, make you clean; put away the evil of your doings from before mine eyes; cease to do evil;
17 Learn to do well; seek judgment, relieve the oppressed, judge the fatherless, plead for the widow.
- Come now, and let us reason together, saith the Lord: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.
It goes on in this vein throughout Isaiah. For example, in the next few lines we have:
21 How is the faithful city become an harlot! it was full of judgment; righteousness lodged in it; but now murderers.
23 Thy princes are rebellious, and companions of thieves: every one loveth gifts, and followeth after rewards: they judge not the fatherless, neither doth the cause of the widow come unto them.
Q. Why is Isaiah angry at the people of Israel for?
Q. What is the historical/religious reason for his anger here?
Q. Moreover, why does he ask the people of Israel to 'reason' here for?