Shared ground
These verses continue Hebrews’ argument that the Melchizedek story says something important about priestly greatness and rank. The writer compares two “places” or settings for tithes: one in which ordinary, dying humans receive them, and another in which Scripture presents the receiver as “living” (v. 8). That contrast is part of how the writer elevates Melchizedek in the discussion.
The writer then makes a second move: Levi—whose line later receives tithes—can still be spoken of as having paid tithes “through Abraham” (vv. 9–10). The text’s stated reason is family solidarity across generations: Levi is counted as involved because he was still “in the loins” of his ancestor when Abraham met Melchizedek.
Where interpretation differs
Two questions commonly get discussed.
First, what does it mean that “it is testified that he lives” (v. 8)? Some take it as a way of saying Scripture does not record Melchizedek’s death and so presents him as living for the purpose of the argument. Others think the wording points beyond the silence of the story and suggests an ongoing life in a stronger sense. Either way, the writer’s stated basis is “testimony” from the scriptural account rather than direct eyewitness reporting.
Second, how should Levi “pay tithes” while not yet born (vv. 9–10)? Some read this as a normal ancient way of speaking about ancestry: what the ancestor does can be credited to the descendant because the descendant is still within the ancestor’s line. Others treat the claim as a more formal representative idea: Abraham’s act is counted as Levi’s act in a way that supports the writer’s later conclusions about priesthood.
Why the disagreement exists
The passage uses compressed reasoning (“so to say”) and depends on how readers understand biblical narratives as “testimony” (v. 8) and how strongly they take family solidarity language (“in the loins,” v. 10). Since the writer builds a theological argument from those details, different assumptions about how far that kind of reasoning can reach produce different readings.
What this passage clearly contributes
Explicitly, the text says (1) there is a contrast between mortal tithe-receivers and a scriptural portrayal of a living receiver (v. 8), and (2) Levi can be spoken of as paying tithes through Abraham because he was still within Abraham’s family line when Abraham met Melchizedek (vv. 9–10). As an inference the writer is steering toward, that representative link makes the later Levitical system look, in a sense, “junior” to what is represented by Melchizedek—preparing for the next steps of Hebrews 7. See also Hebrews 7:4–7.