The blood of Jesus is interpreted as bringing mercy; but that of Abel as demanding vengeance (hence the curse and mark).
ðə blˈʌd ʌv dʒˈiːzəs ɪz ɪntˈɜːpɹɪɾᵻd æz bɹˈɪŋɪŋ mˈɜːsi; bˌʌt ðæt ʌv ˈeɪbəl æz dᵻmˈændɪŋ vˈɛndʒəns hˈɛns ðə kˈɜːs ænd mˈɑːɹk.