Remember, the full list of Reference Questions can always be found in the sidebar or at this link.
Question: According to Heb 7:5, The law requires what?
Answer: The descendants of Levi who become priests to collect a tenth from the people (that is, their brothers-- even though their brothers are descended from Abraham). (cf Heb 9:22)
Question: According to Heb 7:21, He became what?
Answer: A priest (with an oath when God said to him, "The Lord has sworn and will not change his mind: 'You are a priest forever'"). (cf Heb 1:4, 5:9)
Question: According to Heb 7:25, He is able to what?
Answer: Save completely those who come to God through him (because he always lives to intercede for them). (cf Heb 2:18, 5:2)
Question: According to Heb 7:26, Such a high priest what?
Answer: Meets our need. (cf Heb 8:1)
Question: According to Heb 7:27, What was once for all?
Answer: He sacrificed for their sins once for all when he offered himself. (Heb 9:12, 9:26, 10:10; 1Pe 3:18)