Shared ground
These verses present a vision report, not a battlefield report. John repeatedly signals that what he describes is what he “saw in the vision,” and the scene communicates through startling images: colored armor, lion-like heads, and deadly emissions.
The text’s plain claims are that death comes by “three plagues” (fire, smoke, sulfur) from the horses’ mouths, and that the harm also involves the horses’ tails, pictured as serpent-like with heads. The “one third” death toll fits the trumpet pattern of severe but limited judgment within the book’s larger sequence (compare Revelation 9:13–21).
Where interpretation differs (only where needed)
Some readers take the description as pointing to literal future weapons or warfare (for example, some kind of burning, choking, sulfurous attack), with the animal features functioning as vivid but still “real-world” descriptions.
Others read the whole scene as symbolic communication about large-scale destructive forces released in history—military violence, social collapse, or divine judgment—where the fire/smoke/sulfur imagery conveys terror and mass death without requiring a one-to-one match with a specific technology.
A smaller difference shows up around “one third”: some treat it as a precise statistic within the vision’s future fulfillment, while others treat it primarily as a symbolic way to say “devastating, but not total.”
Why the disagreement exists
The passage uses concrete details (colors, numbers, body parts) while also using obviously hybrid creatures (lion heads, serpent tails). That mix makes it hard to tell where “literal description” ends and “vision symbol” begins. Also, the word “plagues” can sound like disease, but here it is tied directly to what comes out of the mouths, which sounds weapon-like; readers weigh those signals differently.
What this passage clearly contributes
Explicitly, the text portrays judgment that is lethal yet bounded (“one third”), and it emphasizes the source and mechanism of harm: mouths and tails. By describing both killing (by the mouth’s emissions) and harming (by the tail), the vision communicates a threat that attacks in more than one way, and it frames that threat as something allowed to operate within set limits rather than wiping out humanity altogether.