Heb.9, 10, and 12:24

 

  (The authorship of Hebrews is debated.)  Basically, a comparison is made with
the initiation of the Mosaic covenant and sacrifice system, both involving
blood, on one hand, and the sacrifice of Jesus and his blood initiating a supe-
rior new Christian covenant on the other.
  http://en.wikipedia.org/wiki/Epistle_to_the_Hebrews

 

  Heb.9:9,10

 

  The old Mosaic sacrifice system and ritualistic bans of foods and drinks per
se are obsolete since the crucifixion.
  http://www.biblegateway.com/passage/?search=hebrews%209;&version=31;

 

  Heb.10:1-25

 

  Unlike the sacrifices of the previous sacrifice system, which couldn't make
up for all sin, and which the faithful follower needed to repeat throughout
their life, faith in Jesus' sacrifice, done once for all time, makes up for all
sins.
  http://www.biblegateway.com/passage/?search=hebrews%2010;&version=31;

 

  Heb.10:26-29

 

  Once a faithful believer is sanctified by belief in the sacrifice of the Son
of God, severe punishment is due if they profane his blood.

  Among ways to profane his blood--consider it to be worth less than the high-
est sacrificial value ever--are:

 

  Heb.9:13,14

 

  to consider it as worth the blood of one of the animals used in the previous
sacrifice system, and

 

  Heb.12:24

 

  to consider it as worth ordinary human blood value.  It speaks in a better
way than the human blood of Abel, who was murdered by Cain.
  http://www.biblegateway.com/passage/?search=hebrews%2012;&version=31;

  Jesus' blood (likewise in other verses, such as Eph.2:13) is of special sacri-
ficial value to Christians.  No other blood has any sacrificial value or has to
be reserved for sacrificial use.  These verses don't substantiate the JWs lead-
ers' ban of human blood for medical use since that doesn't involve using Jesus'
blood.  (In the unlikely event that it does, ask around the hospital for him and
get his okay first, I don't know.)