Shared ground
Jesus tells the whole group that their loyalty will collapse “tonight” (v.31). He anchors that warning in a Scripture line about a shepherd being struck and sheep scattering, so the coming breakdown is pictured as a flock losing its center.
Jesus also speaks past the failure: after he is raised, he will go ahead of them into Galilee (v.32). In the flow of Matthew, that statement sets the scattering inside a larger sequence that includes reunion after his raising.
Peter becomes the focus. He claims he will not fall away even if others do (v.33). Jesus answers with a detailed prediction: Peter will deny knowing him three times before the rooster crows (vv.34–35). Matthew ends the scene by noting that all the disciples make similar vows.
Where interpretation differs
What “fall away/offended” means (v.31). Some read it mainly as fear-driven flight and temporary collapse under pressure. Others hear a deeper break in loyalty or relationship implied in the wording, even if it is later repaired in the story.
How the “strike the shepherd” line relates to that night’s events (v.31). Some treat the quotation as describing what human opponents do to Jesus (they strike him), with the scattering following naturally. Others emphasize the way the quotation is phrased (“I will strike”) and see a stronger claim that God is involved in the sequence, not merely predicting it.
How exact “before the rooster crows” is (v.34). Some take it as a precise time marker in the night-to-dawn hours; others see it as a common way to say “before morning,” still pointing to an imminent denial.
Why the disagreement exists
The passage combines (1) vivid metaphor (“shepherd” and “sheep”), (2) a Scripture quotation with first-person wording, and (3) a concrete prediction with a familiar time signal (“rooster crow”). Each element can be read either more literally (exact timing; direct agency) or more broadly (general timing; emphasis on the pattern rather than the mechanics).
What this passage clearly contributes
It portrays Jesus as knowing in advance both the disciples’ coming collapse and the specific shape of Peter’s denial. It frames the disciples’ scattering as consistent with Israel’s Scriptures, while also placing a future regathering on the horizon through Jesus’ raising and a meeting in Galilee (Matthew 26:31–35). It also exposes the gap between confident self-assessment (“I will never”) and what actually unfolds under pressure.