The book of Hebrews was written to the kingdom church, the believing remnant of Israel, undergoing persecution and scattered (Acts 8:1-4).
This book is not written directly to the church today, the body of Christ, although it is most profitable for our understanding. Misunderstanding doctrine in this book can be a snare to the believer and impact assurance of salvation.
Hebrews 1:1 God, who at sundry times and in divers manners spake in time past unto the fathers by the prophets,
1:2 Hath in these last days spoken unto us by his Son, whom he hath appointed heir of all things, by whom also he made the worlds;
God spoke in time past unto the fathers of Israel, and the us to whom the Son has spoken to, are the children of Israel.
The book of Hebrews is dealing with "these last days". The last days are spoken of as pertaining to the time in which the Davidic kingdom will be established on earth, in which, Christ will reign upon David's throne from Jerusalem along with the believing remnant of Israel (Isaiah 2:2-3 Luke 12:32).
1:3 Who being the brightness of his glory, and the express image of his person, and upholding all things by the word of his power, when he had by himself purged our sins, sat down on the right hand of the Majesty on high:
Christ, by his own blood, entered in once into the holy place, having obtained eternal redemption for believing Israel (Hebrews 9:12). Christ died for the redemption of the transgressions that were under the first testament (Hebrews 9:15).
1:8 But unto the Son he saith, Thy throne, O God, is for ever and ever: a sceptre of righteousness is the sceptre of thy kingdom.
Christ will establish his prophetic kingdom on earth (Psalm 45:6 Isaiah 9:6-7 Daniel 2:44).
