Throwing away the lone pastor model

One of our students is a very gifted evangelist and has grown a church from 1 family to around 100 people in 5 years.  He and his wife have done a marvellous job.  However, they are tired and worn out.  He preaches almost every Sunday and his wife teaches Sunday school.  I challenged our student to have a plan for seeing one of the members trained to be able to preach by the end of the year and the same for Sunday school.  I encouraged a model of ministry where he is the lone pastor but is training up the members of his church (Ephesians 4:12).