The Servant of the Lord foretold by Isaiah is Christ—Head and Body. Isaiah describes what is true concerning the Servant of the Lord. Only those who have matured in this manner are qualified to work with Jesus Christ in establishing the Kingdom of God on the earth.
The main purpose of the two thousand years of the Church Age has been to build up the members of Christ's Body so they can perform the work of the Servant of the Lord—now, and especially during future ages. All the ministries and gifts of the Body of Christ serve to bring each member of the Body to maturity as measured by the stature of the fullness of Christ.
The Servant of the Lord will bring justice to the earth.