In nearly every greeting in the epistles, the writer sends greetings from the Father and Jesus Christ. Why are there no greetings from the Holy Spirit?
Martin Collins suggests that the Pastoral Epistles, emphasizing order, conduct, and appointing sound-minded leaders, generally had more to do with practical matters than with doctrine, focusing upon spiritual principles rather than physical ritual. Paul, for example, suggested that circumcision of the heart or spiritual …
Hebrews is addressed to a people living at the end of an era, who were drifting away, had lost their devotion, and were no longer motivated by zeal.
In terms of spiritual insight, Hebrews is a pivotal book, whose function is to bridge the purposes and themes of the Old and New Testaments.