How do we know that judgment is real according to the Bible?

John the Baptist's message in Luke 3:7-14 proclaims the imminent judgment and the 'coming wrath.' He uses the imagery of an axe laid at the root of trees, symbolizing the urgency of repentance. This warning serves as a critical reminder of the reality of eternal judgment, a consistent theme throughout Scripture. In the context of historic Reformed theology, this underscores the gravity of sin and the necessity of grace through faith in Christ for salvation. The acknowledgment of judgment is integral to understanding the full scope of salvation; it drives the urgency for believers to live in accordance with their faith and warns the unrepentant of the serious consequences of their actions.