Here is another Scripture concerning "The Day of the LORD":
Jesus speaking: I have trodden the winepress alone; and of the people there was none with me: for I will tread them in mine anger, and trample them in my fury; and their blood shall be sprinkled upon my garments, and I will stain all my raiment. For The Day of Vengeance is in mine heart, and the year of my redemption is come. - Isaiah 63:3-4
And I looked, and there was none to help; and I wondered that there was none to uphold: therefore mine own arm brought salvation unto me; and my fury, it upheld me. And I will tread down the people in mine anger, and make them drunk in my fury, and I will bring down their strength to the earth. - Isaiah 63:5-6