[Since this is a fairly short post, I thought I should post it sooner than my usual Sunday/Wednesday schedule.}
In my last post, we continued to look at The Coming Day of the Lord in Yesha’yahu 2:7-17. In this post, we conclude our look at The Coming Day of the Lord beginning in Yesha’yahu 2:18-22.
18 The idols will be completely abolished. 19 People will enter cracks in the rocks and holes in the ground to escape the terror of Adonai and His glorious majesty when He sets out to convulse the earth. 20 On that day a man will take hold of his idols of silver and idols of gold, which they made for themselves to worship, and fling them away to the moles and bats! 21 Then they will enter the cracks in the rocks and the crevices in the cliffs to escape the terror of Adonai and His glorious majesty when He sets out to convulse the earth. 22 Stop relying on man, in whose nostrils is a mere breath— after all, he doesn’t count for much, does he?” ~ Isaiah 2:18-22 (CJB)
It is clear to me that although verse 18 has certainly been partially fulfilled, it won’t be completed until the ultimate Day of the Lord at Yeshua’s Second Coming.
People will flee in terror from the coming judgment of God. In the ancient Near East, earthquakes are an indication of the divine involvement in battle. Additionally, the dread of a deity as a divine warrior was often believed to precede a powerful, successful army into battle.
Out of fear, they will throw away their precious idols. Just as men have fled from the glory of the Adonai, the idols will be tossed aside as useless.
Verse 22 states an important and pervasive theme in Yesha’yahu connected to the prophet’s concern that God’s people act with humility. They were not to trust in man but to put their confidence in God.
“Don’t look to man,” God says. “You don’t even know if he’s going to have another breath. Instead, look totally, fully, and only to Me.” 
Come Lord, quickly!!
In my next post, I will explore God’s Judgment on Y’hudah and Yerushalayim in Yesha’yahu 3:1-26.
 Jon Courson’s Application Commentary.