There are two answers: one physical, one spiritual. Physically, the 'other sheep' are the other tribes of Israel. But there is a spiritual meaning, too.

Jesus states that He has other sheep which are not of this fold. He must bring them also. They will hear His voice. There will be one flock and one shepherd. Jesus is a unifier of sheep and flocks. He draws them into one flock like He and the Father are one.

After the Tribulation, God promises to restore Israel to the promised land where she will have a chance to learn and live God's truth in the Millennium.

The shepherd and door analogies in John 10 depict the close relationship of Jesus with His flock as the security and stability provided by His protection.

Many 'church of God' organizations claim to be part of—or even the only—church of God. The Bible reveals specific characteristics of God's church.

No matter how scattered Israel is, God will not lose the smallest grain. Using Jerusalem as a reference point, Israel dispersed north and west into Europe.

God's true church cannot be found without revelation nor can one join the organization; God calls and places each member in its appropriate place in the Body.