In the pastoral epistles, as Paul prepares for his own death, he passes the torch to his successors. Look Inside the Book This readable new commentary The Pillar of the Truth gives background for 1 & 2 Timothy and Titus. Wilson brings out parallels between the Apostolic age and Israel's time in the wilderness, and, in Canon Press resource: https://canonpress.com/products/pastoral-epistles-commentary-the-pillar-of-the-truth