John 1:42-43 – Where did Jesus first meet Simon Peter and Andrew?

here is no contradiction here at all between Matthew 4:18-19 and John 1:42-43. The chronology of events becomes evident when viewing the grid below. In John 1:35ff, John the Baptist was with his disciples. He tells them that Jesus is the “Lamb of God” (v. 36) and they stay with Jesus a while (v. 37). In John 1:40-42, Andrew goes and gets Simon Peter and they follow Jesus. Why? Because Andrew had spent time with Jesus and told Simon that Jesus was the Messiah (v. 41). Later, in Matt. 4:18, Jesus was walking by the Sea of Galilee and He sees Simon Peter and Andrew as they were fishing. He had not asked them to follow Him until this point in verse 4:19. They do (4:20). There is no contradiction.