Kevin sees the Pastorals giving four categories of passages that speak to the core of apostolic doctrine:
- The Trustworthy Sayings (1 Tim. 1:15; 3:1; 4:9-10; 2 Tim. 2:11-13; Titus 3:4-8)
- Creedal Sayings (1 Tim. 1:17; 2:5; 3:16; 6:15-16; Titus 2:11-15)
- Doctrines Associated with False Teaching (1 Tim. 1:8-11; 4:1-3; 2 Tim. 2:18; Titus 1:16)
- Truths Associated with the Gospel and Sound Doctrine (2 Tim. 1:8-10; 2:8; 3:14-17)