A pastor and spiritual leader must teach and train able Christ-followers in God's Word to share in the spiritual oversight of an assembly of Christ-followers.
The first (highest priority) thing that needs done for sheep 'without a shepherd' (those ignorant of God's will and purposes) is to be taught the Word of God.
Those who are gifted by God to proclaim His Word (apostles, prophets, evangelists, pastors, teachers) should receive the Word (the revelation) from the LORD.
An itinerate teacher under the Holy Spirit will teach wherever, whenever, and however long is possible to maximize the time with those who are spiritually hungry.