Why is faith important for being considered Jesus's sheep?

According to John 10:27, 'My sheep hear my voice, and I know them, and they follow me.' This verse emphasizes that the identification of Jesus' sheep is manifested through their faith and obedience. True believers respond to the gospel message, reflecting their recognition of Christ's voice and their trust in Him as their sole source of salvation. This recognition is not merely an intellectual agreement but a profound, transformative faith that originates from the grace of God, which empowers individuals to repent and believe.