In this verse, the Apostle Paul addresses the Thessalonian church, offering them comfort and assurance about the ultimate victory of Christ over evil. The 'lawless one' is a symbolic representation of ultimate rebellion against God, often associated with the concept of the Antichrist in Christian eschatology. Despite the fear such a figure might inspire, the verse emphasizes the supreme power of Jesus Christ. The phrase 'overthrow with the breath of his mouth' suggests that Jesus' power is so great that even the most formidable evil can be vanquished effortlessly. This imagery highlights the divine authority and sovereignty of Christ.
The 'splendor of his coming' refers to the second coming of Christ, a central hope in Christian belief, where Jesus will return in glory to establish his kingdom. This event is portrayed as a moment of triumph and renewal, where justice will be served, and all wrongs will be righted. For believers, this verse serves as a reminder of the hope and assurance found in Christ, encouraging them to remain steadfast in faith despite present challenges or future uncertainties.