Halieus (G231) is a fisherman. The word appears in the Gospels as the occupation of the first disciples — Simon Peter, Andrew, James, and John were all halieis. Jesus' famous call 'Follow me, and I will make you fishers of men' (Matthew 4:19) transforms the vocational identity of halieis into a metaphor for evangelism.
Jesus calling halieis as his first disciples is profoundly counter-cultural. These were blue-collar workers, not scribal elite. The gospel begins at the waterfront, not the academy. The metaphor of fishing (halieis anthropōn — fishers of men) also appears in Jeremiah 16:16, where God sends fishers to catch the scattered of Israel — a prophetic image Jesus deliberately invokes.