Andrew (Ανδρεας). Explained by John as one of the two disciples of the Baptist and identified as the brother of the famous Simon Peter (cf. also John 6:8; John 12:22). The more formal call of Andrew and Simon, James and John, comes later (Mark 1:16; Matthew 4:18; Luke 3:1-11).

That heard John speak (των ακουσαντων παρα Ιωανου). "That heard from John," a classical idiom (παρα with ablative after ακουω) seen also in John 6:45; John 7:51; John 8:26; John 8:40; John 15:15.