“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;”
King James Version (KJV)
1:2 Whom he hath appointed heir of all things - After the name of Son, his inheritance is mentioned. God appointed him the heir long before he made the worlds, #Eph 3:11|; Prov 8:22, &c. The Son is the firstborn, born before all things: the heir is a term relating to the creation which followed, #Heb 1:6|. By whom he also made the worlds - Therefore the Son was before all worlds. His glory reaches from everlasting to everlasting, though God spake by him to us only in these last days.
Heb 1:2 Hath in these last days. "At the end of these days" (Revised Version). At the end of the Jewish dispensation. Spoken unto us by [his] Son. "Last of all he sent his Son" (Mt 27:37). The importance of the message is shown by the messenger. No longer an inspired prophet, but, instead, the Son of God is the speaker. Whom he hath appointed heir of all things. The Father delivered all things into the hands of the Son (Ac 2:36 Joh 17:10). "The heir . . . is lord of all" (Ga 4:1). By whom also he made the worlds. Through his agency or instrumentality. Christ, the Logos, is represented as God's medium in creation. See PNT "Joh 1:3".