Faith made the sacrifice which Abel offered to God a better sacrifice than Cain's, and won him renown as a righteous man, God himself establishing his renown by accepting his gifts; and it is by the example of his faith that Abel, though dead, still speaks.

one who has no need to offer sacrifices daily as those High Priests have, first for their own sins, and then for those of the People. For this he did once and for all, when he offered himself as the sacrifice.