For those who follow what Dr. Ruckman teaches as your final authority, note his quotes in The Books of General Epistles Volume 2, copyright @2004.
This set of epistles (Hebrews - Revelation) could more properly (and more Scripturally) be called "Hebrew-Christian Epistles" or "Tribulation Epistles" or even "Transition Epistles." None of them are aimed directly and doctrinally to the Body of Christ in the Church Age.
page vii - Introduction
Exactly as Matthew and Acts are "transitional books," so Hebrews joins them to take you into times that will take place AFTER the Body of Christ has been called home to the Judgment Seat of Christ and the Marriage of the Lamb. Matthew bridges the chasm between the two Testaments; Acts builds a 'bridge' from Israel to the Church Age; and Hebrews leaps from the Church Age into the Great Tribulation: "the time of Jacob's trouble" (Jeremiah 30:7).
For this reason it is obvious to those who have engaged in dialogues with Catholics, Campbellites, Charismatics, Calvinists, Seventh-day Adventists, Mormons, Jehovah Witnesses, and Postmillennialists that every heresy taught by Christians since A.D. 90 has a basis, or 'proof-text,' taken from one of these four epistles.
As a matter of fact, every saved Christian heretic from A.D. 90 to A.D. 2004 availed himself of Matthew, Acts, and Hebrews to teach false doctrines; namely Matthew 10,16,18; the Sermon on the Mount, the Lord's Prayer, 24,25; Acts 2,8,19; and Hebrews 1,3,4,6,10,11.
There is no way you can apply these verses doctrinally to New Testament salvation as found in Romans, Ephesians, Galatians, and Colossians. You are constantly being warned (as you are in Matthew, Hebrews, James, and Revelation) that your works are connected with your "New Birth."
Page 111, referring to I John 3:20-24
No such simple explanation as II Timothy 2:13 or 'works prove you are saved: (James 2) will explain I John 2:4,9,11,24; 3:4,6-10, 14-`15; 4:7-8,15,20 and 5:3,16,18.