“The superior excellency of Abel’s sacrifice to Cain’s, lay both in the matter, and in the manner of it; the one was offered heartily to the Lord, the other only in show; the one was offered in faith, the other not; Abel looked through his sacrifice to the sacrifice of Christ, not so Cain. Abel’s sacrifice was a lamb, a type of Christ, the Lamb of God; a firstling, a figure of him who is the firstborn of every creature; one of the fattest of his flock, expressive of the excellency of Christ.” -John Gill