Slow but sure moves the might of the gods.

The line expresses a common Greek tragic idea: divine power (or fate, justice, and the moral order associated with the gods) may appear delayed, but it is ultimately inescapable. Human beings can mistake the gods’ “slowness” for absence or indifference and act with overconfidence, yet the eventual outcome—punishment, reversal, or restoration of order—arrives with certainty. In Euripidean drama this thought often underwrites sudden turns of fortune and the exposure of human error (hubris, rash judgment, or moral blindness). The aphoristic phrasing also makes it a general maxim about patience and accountability: consequences may not be immediate, but they are dependable.