Noun psēphos (pebble) in the Gospels-Acts

(Translation from NRSV with a few modifications for a more literal meaning)

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26: 10And that is what I did in Jerusalem; with authority received from the chief priests, I not only locked up many of the saints in prison, but I also cast my pebble (psēphos) (i.e. vote) against them when they were being condemned to death.