One of the two who heard John speak, and followed him, was Andrew, Simon Peter's brother.
All Commentaries on John 1:40 Go To John 1
Cornelius a Lapide
AD 1637
Now one of the two, &c. John inserts this to show in what way Peter, who was to be the prince of the Apostles, and the head of the whole Church, was led to Christ. It was because Andrew, being glad at finding and hearing Christ, brought his own brother Peter, for whom he had a singular love, to Him, that he might make him partaker in so great a good. For this zeal, which burns to make others, especially those nearest to us, partakers with us, and to draw them to God, is a mark and an effect of the Divine Vocation. For as fire kindles fire, so does zeal kindle zeal. Moreover, Peter, as well as Andrew, seems to have been a disciple, or at least a diligent hearer of John the Baptist. Which of the two was the elder is not known. The conversion of Peter is the glory and praise of Andrew.
