Shared ground
These verses describe the fourth and fifth bowls as targeted judgments with immediate effects: extreme heat from the sun and then darkness over the beast’s throne and kingdom. The text presents these events as controlled, not accidental: the sun’s scorching ability is “given,” and God is explicitly said to have power over the plagues.
A repeated human response is emphasized twice: people speak against God (including “the God of heaven”) and refuse to repent. The refusal is not just emotional; it is framed as refusal to turn from “their works,” meaning their settled patterns of action remain unchanged.
Where interpretation differs
How “it was given” works in v. 8. Some read the wording as permission granted to the sun (or to the agent pouring the bowl) so that the scorching happens under God’s allowance. Others treat it more generally: the judgment itself is what is “given,” stressing that the plague has a defined, authorized scope.
How literal the sun and darkness are. Some take the heat and darkness as concrete, physical disruptions in the natural world. Others read them as symbolic (or symbolic with real-world effects): “sun” as intensified oppressive conditions and “darkness” as collapse, confusion, or misery falling on the beast’s realm.
What the “throne of the beast” points to. Some think it refers to a specific center of rule (a capital, a seat of power). Others read it as the beast’s authority structure more broadly—its governing reach and the system that demands loyalty.
Why the disagreement exists
Revelation uses vivid, cosmic imagery while also making historical-political sense in a world of imperial power. The language can describe physical phenomena (heat, darkness) and also function as a way of portraying the breakdown of a regime. The text itself does not stop to clarify whether these are strictly natural disasters, symbolic descriptions of social judgment, or a combination.
What this passage clearly contributes
Explicitly, the passage shows (1) God’s acknowledged power over the plagues, (2) escalating suffering that reaches both people generally and the beast’s domain specifically, and (3) a hardening response: blasphemy instead of repentance, and refusal to give God glory. As an inference, the targeting of the beast’s throne suggests that the judgment challenges the beast’s claim to rule, even before later bowls bring further climactic events (Revelation 16:12).