Heb 1:1 God, who at sundry times and in divers manners spake in time past unto the fathers by the prophets, Heb 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.
What are the "last days" he's speaking of? It's the days he spoke to the fathers in the language of prophet. He's saying those days have come to an end. A new day has dawned, this is the day the Lord has made. We no longer live in the day of the divers manners and many portions. God has changed the language. Now he speaks "in Son". The final word from God is Jesus Christ.
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