Matthew 19:28

In the New Age. The "New Age" is the "messianic community," the "Kingdom/church" which is still future as he says this; which could not begin until after his death, burial, and resurrection. The Twelve were to do a special work in this Kingdom. They would "judge" the twelve tribes of Israel (and Paul would be sent to the Gentiles). The apostles were given a special portion of the Holy Spirit and were taught everything which Jesus had said (see John 20:22-23: Acts 1:1-2; 2 Peter 1:15). When Jesus comes again (Revelation 1:7), we look for this earth to be destroyed by fire, and then a new earth (2 Peter 3:10-13).