In John 10, Jesus contrasts the religious leaders, the false shepherds (John 9, 10:1, 8, 12-13), with Himself, the Good Shepherd. His concern in that passage is to show how the false shepherds are spiritually blind and harming the Jews. They are like robbers jumping the fence and poaching sheep (John 10:1). However, the false shepherds were only able to steal false sheep (Jews who were not really sheep). The other true sheep ignored the calls by the false shepherds, having their ears tuned to hear and follow Jesus. These true sheep are the “sheep” in His story. Therefore, the “sheep” are believing Jews. However, Jesus intends to save more than just the believing Jewish “sheep.” He has “other sheep.” Based on the context, those “other sheep” are believing Gentiles. Jesus is saying that His mission is greater than just the believing Jews. He is gathering “other sheep” into the same sheep fold, where believing Jews and Gentiles will follow Jesus together.
Jesus’ intention to gather the “other sheep” has not been completed. Paul says that there will be a time when the gathering of Gentile sheep ends, at least in large part (Romans 11:25). However, that time has not yet come. This means that there are still more “other sheep” that Jesus intends to save.
When Jesus left the earth, He gave the disciples the “great commission,” which tells us to go to all nations making disciples, baptizing and teaching them (Matthew 28:19-20). To “go to all nations” refers to the Gentiles.
Every Christian needs to participate in that mission, helping to bring Christ’s message to all the nations so that those whom Jesus intends to save can hear His voice, recognize Him as their Shepherd, and follow Him.
However, while the current mission is heavily Gentile focused, notice that Jesus refers to Gentiles as “other sheep.” Gentiles do not replace Jews. Instead, we are added to the same flock. Right now, there are true Jewish sheep who are hearing and following Jesus. However, one day, all of the sheep of Israel will hear, repent, and follow the Good Shepherd (Romans 11:26-27). Even as we spread the message to the Gentiles, let us look forward with great anticipation to that final gathering of Jews!