The "all" referred to is the completion of the messiah's mission, if the letter to the Hebrews is to be believed. And I believe Jesus' words, "It is finished", when he was crucified are relevant to the matter - though I won't ask anyone else to subscribe to the belief.
That Paul authored the letter to the Hebrews is highly unlikely, according to the majority consensus of scholars.
That Paul authored the letter to the Hebrews is highly unlikely, according to the majority consensus of scholars.
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