“8 Therefore it says,
“When he ascended on high he led a host of captives,
and he gave gifts to men.”
9 (In saying, “He ascended,” what does it mean but that he had also descended into the lower regions, the earth? 10 He who descended is the one who also ascended far above all the heavens, that he might fill all things.) 11 And he gave the apostles, the prophets, the evangelists, the shepherds and teachers, 12 to equip the saints for the work of ministry, for building up the body of Christ, 13 until we all attain to the unity of the faith and of the knowledge of the Son of God, to mature manhood, to the measure of the stature of the fullness of Christ, 14 so that we may no longer be children, tossed to and fro by the waves and carried about by every wind of doctrine, by human cunning, by craftiness in deceitful schemes.15 Rather, speaking the truth in love, we are to grow up in every way into him who is the head, into Christ, 16 from whom the whole body, joined and held together by every joint with which it is equipped, when each part is working properly, makes the body grow so that it builds itself up in love."
Ephesians 4:8-16
Finally, pastors and teachers, which, as the Greek makes clear, constitutes a combined office. This is significant and it is possible to see a reason for such a union. The teaching of the Word, the exposition of Holy Scripture, is something that probes men's hearts and lives, and unearths and brings to the surface the basic human problems and needs that lurk hidden in the recesses of the soul. It is this fact that necessitates pastoral care and help in order to resolve them and bring relief and blessing. According to the narrative of the gospels, the Presence of Christ seemed again and again to draw into the open the demons that hitherto had remained concealed in the dark and hopeless depths of men's lives, in order that they might be challenged and cast out. In the same way, the Word exposes the works of the evil one in human experience, to enable wise pastoral care to be exercised for the establishment of spiritual health.
And the reality of this healing and restoration is borne out in what Paul says in vv 12, 13 about the purpose Christ had in view in instituting these gifts in His Church, to bring people into their 'proper condition', and thus 'made serviceable' for Him.