The day of the Lord; the time of God's taking vengeance upon sinners, which is called God's day, Isaiah 13:6,9 Eze 13:5 30:3, and oft elsewhere.
Related Commentaries of Isaiah 2:12
Isaiah 2:12
12 For the day of the LORD of hosts shall be upon every one that is proud and lofty, and upon every one that is lifted up; and he shall be brought low: