And he gave some, apostles; and some, prophets; and some, evangelists; and some, pastors and teachers;
For the perfecting of the saints, for the work of the ministry, for the edifying of the body of Christ:Till we all come in the unity of the faith, and of the knowledge of the Son of God, unto a perfect man, unto the measure of the stature of the fulness of Christ. - Eph. 4:11-13
"Is there ever a time when the members can stop working toward perfection, when they no longer are benefited by activity in the Church, or when they do not require teaching and edifying?" asked Elder Mark E. Petersen of the Quorum of the Twelve at the April 1978 general conference.
"Paul said that these officers who teach and edify are needed in the Church until we become perfect, until we reach the fulness of the measure of the stature of Christ. Heaven knows that none of us has achieved that distinction."