Are you blind? Did you read the scripture that Paul wrote?
Read it again, because it is right there in the scripture.
Why is it whenever the scripture is provided, people respond back with, "where's your proof?"
Read it and understand what Paul is saying!
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By faith Abel offered God
a better sacrifice than Cain did. By faith he was commended as righteous when God gave approval to his gifts. And by faith he still speaks, even though he is dead." - Heb.11:4
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Do you see the word "sacrifice" in the scripture above? I am providing for you the definition of the word
HELPS Word-studies
2378 thysía – properly, an
offering (
sacrifice); an official sacrifice
prescribed by God; hence an offering
the Lord accepts because offered on His terms.
2378 /thysía ("sacrifice")
refers to various forms of OT blood sacrifices ("types") – all awaiting their
fulfillment in their
antitype, Jesus Christ (Heb 10:5-12).
Do you see the bolden words above which is the definition of the word "thysia" translated as "sacrifice" used in Heb.11:4?
Read the scripture and understand what is saying. What Cain and Abel offered the Lord were sacrifices. Abel's was accepted because it had to do with shed blood and Cain was rejected because it didn't have to do with the shedding of blood.
Read the scripture, for it speaks for itself.