What does Isaiah 5:15 mean?

The picture coming into focus is of a people committed to exalting themselves first. They use their money and power to acquire more and more property (Isaiah 5:8–9). They adorn themselves with expensive clothes and jewelry with the purpose to be noticed by others (Isaiah 3:16–18). And lastly, they live in a constant state of personal pleasure by drinking and partying (Isaiah 5:11–12).

Through Isaiah, God warns His people they will not go unchecked in this direction for long. He will bring an end in the form of foreign invaders who will strip away every luxury and opportunity to elevate oneself above others and above the Lord (2 Kings 24:14). In that day, there will be no one looking up at the Lord in defiance. Those who survive will hang their heads in the humility that comes from defeat and loss. The following verse will show that it will not be the Lord who loses. It will be His people who have abandoned knowing Him.