Pour Out His Wrath
Jesus is about to leave the mercy seat of the heavenly sanctuary, to put on garments of vengeance, and pour out His wrath in judgments upon those who have not responded to the light God has given them. "Because sentence against an evil work is not executed speedily, therefore the heart of the sons of men is fully set in them to do evil." Ecclesiastes 8:11. Instead of being softened by the patience and long forbearance that the Lord has exercised toward them, those who fear not God and love not the truth, strengthen their hearts in their evil course. But there are limits even to the forbearance of God, and many are exceeding these boundaries. They have overrun the limits of grace, and therefore God must interfere and vindicate His honor.
Of the Amorites, the Lord said, "In the fourth generation they shall come hither again, for the iniquity of the Amorites is not yet full." Although this nation was conspicuous because of its idolatry and corruption, it had not yet filled up the cup of its iniquity, and God would not give command for its utter destruction. The people were to see the divine power manifested in a marked manner, that they might be left without excuse. The compassionate Creator was willing to bear with their iniquity until the fourth generation. Then, if no change was seen for the better, His judgments were to fall upon them.
CET 185-186