In this passage, the imagery of being dressed in white signifies purity, victory, and holiness. It represents the transformation and reward for those who remain steadfast in their faith. The promise that their name will not be blotted out from the book of life assures believers of their secure place in God's eternal kingdom. This book symbolizes God's record of those who belong to Him, and having one's name in it is a metaphor for eternal life and salvation.
The acknowledgment before God and His angels signifies divine approval and honor. It reflects the idea that those who are faithful will be recognized and celebrated in the heavenly realm. This assurance is meant to inspire believers to endure trials and remain committed to their faith, knowing that their perseverance will be rewarded. The verse encourages a life of faithfulness and integrity, reminding believers of the ultimate recognition and eternal life promised by God.