“The rooster will not crow till you have denied me”
Will you lay down your life for Me?… Truly, truly, I tell you, before the rooster crows, you will deny Me three times. (John 13:38 BSB)
What it sounds like today
A prediction pegged to a random farm bird.
The cultural key
'Cockcrow' (gallicinium) was the name of the third Roman watch of the night, roughly midnight to 3 a.m.; Mark 13:35 lists the four watches: evening, midnight, cockcrow, morning. So the phrase was also a time-stamp, like saying 'before 3 a.m.' The prediction means: before this night is even out. That an actual rooster then punctuates the third denial turns the clock reference into an alarm Peter never forgot. John frames the prediction as a direct echo of Peter's boast ('I will lay down my life for you'), handed back as a question. The vow and its collapse are set side by side in one verse.
Recovered meaning
'Within hours, before the night's third watch: you, the rock, three times.' The compressed timeline is the point: Peter's collapse won't be a slow drift but this very night, and dawn will find it already done.