In this verse, the imagery of the Lord leading a vast army underscores His supreme authority and power. The army is described as beyond number, highlighting the limitless resources and strength at God's disposal. This depiction serves to remind believers of the omnipotence of God and His ability to execute His will on earth. The 'day of the LORD' is a significant theme in biblical prophecy, often representing a time when God intervenes directly in human affairs, bringing both judgment and deliverance. It is described as 'great' and 'dreadful,' suggesting a time of awe-inspiring power and serious consequences for those who oppose God's will.
This verse calls for introspection and readiness, urging believers to consider their standing with God. It challenges individuals to recognize the seriousness of God's judgment while also offering hope for those who are faithful and obedient. The rhetorical question 'Who can endure it?' serves as a reminder of the importance of aligning oneself with God's purposes, as His plans are both just and inevitable. This passage encourages a deeper understanding of God's nature and the importance of living in accordance with His commandments.