For this is the day of the Lord— That is, as it follows, the day of his vengeance; hence the day of the Lord is used in the New Testament to signify the day of judgment: the same phrase of a sacrifice in the north country, (Bozrah) is used by Isaiah, ch. Jeremiah 34:6.
Related Commentaries of Jeremiah 46:10
Jeremiah 46:10
10 For this is the day of the Lord GOD of hosts, a day of vengeance, that he may avenge him of his adversaries: and the sword shall devour, and it shall be satiate and made drunk with their blood: for the Lord GOD of hosts hath a sacrifice in the north country by the river Euphrates.