Book of Joel Chapter 2 Vs. 11

 The Day of the Lord

And the LORD shall utter his voice before his army: for his camp is very great: for he is strong that executeth his word: for the day of the LORD is great and very terrible; and who can abide it? Joel 2:11

for the day... The prophet concluded with a rhetorical question (Who can endure it?), to suggest that no one can endure this great and dreadful day (cf. Mal. 3:2; Mal. 4:5).

and who can... Question 3. Next, Joel 2:14.

shall utter His... Nature has not gone awry; the locusts are not beyond God’s control. They move at His specific command.

for His camp... These creatures are certainly at his beck and command: He can command the locust to devour the land (Chr. 7:13); which may be meant by his uttering his voice here; though Jarchi and Kimchi interpret it of the Lord’s giving notice of this judgment by his prophets before it was known.

for He is... For the Day of the Lord is great and very terrible, and who can abide it? The day appointed by the Lord to take vengeance on the Jews for sin. And this, being the day of his wrath, is very dreadful and intolerable.

So any season may be called, in which God remarkably pours down his wrath on men because of their sins (see Rev. 6:17). Such was the time of Jerusalem’s destruction, both by the Chaldeans and Romans.

This could be the army of the locusts, or the army of the LORD that is made up of all the believers in Christ. The weapon that each of them use, is the Word of God (two-edged sword). This army is obedient to the wishes of the LORD. The answer is no one can abide against God.

Rev. 17:14 “These shall make war with the Lamb, and the Lamb shall overcome them: for he is Lord of lords, and King of kings: and they that are with him [are] called, and chosen, and faithful.”

Rev. 19:11 “And I saw heaven opened, and behold a white horse; and he that sat upon him [was] called Faithful and True, and in righteousness he doth judge and make war.”

The prophet concluded this with a rhetorical question (Who can endure it?), to suggest that no one can endure this great and dreadful day (cf. Mal. 3:2; 4:5). If the army in Joel 2:1-11 was in Joel’s day, it may foreshadow the army in Joel 3:1-21.