The work of the servants of God is the calling of God to every member in the church, bringing the body of Christ into the unity of the faith for the work of the ministry. These will be preaching the Gospel of the kingdom of God into all the world for a witness to all nations, then the end will come.
Where we as the body of Christ are presently in the times and seasons of God. Also, what God is preparing for those who have an ear to hear what the Spirit is saying to the churches.