Deuteronomy 21:1
21:1 If [one] be found {a} slain in the land which the LORD thy
     God giveth thee to possess it, lying in the field, [and] it
     be not known who hath slain him:

     (a) This law declares how horrible murder is, seeing that
         because of one man a whole country will be punished,
         unless remedy is found.

Deuteronomy 21:4
21:4 And the elders of that city shall bring down the heifer
     unto a rough {b} valley, which is neither eared nor sown,
     and shall strike off the heifer's neck there in the valley:

     (b) That the blood shed of the innocent beasts in a
         solitary place, might make them abhor the fact.

Deuteronomy 21:8
21:8 Be merciful, {c} O LORD, unto thy people Israel, whom thou
     hast redeemed, and lay not innocent blood unto thy people
     of Israel's charge. And the blood shall be forgiven them.

     (c) This was the prayer, which the priests made in the
         audience of the people.

Deuteronomy 21:12
21:12 Then thou shalt bring her home to thine house; {d} and she
      shall shave her head, and pare her nails;

      (d) Signifying that her former life must be changed before
          she could be joined to the people of God.

Deuteronomy 21:13
21:13 And she shall put the raiment of her captivity from off
      her, and shall remain in thine house, {e} and bewail her
      father and her mother a full month: and after that thou
      shalt go in unto her, and be her husband, and she shall be
      thy {f} wife.

      (e) As having renounced parents and country.
      (f) This was only allowed in the wars, otherwise the
          Israelites could not marry strangers.

Deuteronomy 21:15
21:15 If a man have two wives, one beloved, and another {g}
      hated, and they have born him children, [both] the beloved
      and the hated; and [if] the firstborn son be hers that was
      hated:

      (g) This declares that the plurality of wives came from a
          corrupt affection.

Deuteronomy 21:17
21:17 But he shall acknowledge the son of the hated [for] the
      firstborn, by giving him a {h} double portion of all that
      he hath: for he [is] the beginning of his strength; the
      right of the firstborn [is] {i} his.

      (h) As much as to two of the others.
      (i) Unless he is unworthy, as Reuben, Jacob's son, was.

Deuteronomy 21:18
21:18 If a man have a stubborn and rebellious son, which will
      not obey the voice of his father, or the voice of his {k}
      mother, and [that], when they have chastened him, will not
      hearken unto them:

      (k) For it is the mother's duty also to instruct her
          children.

Deuteronomy 21:21
21:21 And all the men of his city shall {l} stone him with
      stones, that he die: so shalt thou put evil away from
      among you; and all Israel shall hear, and fear.

      (l) A death which was also appointed for blasphemers and
          idolaters: so that to disobey the parents is most
          horrible.

Deuteronomy 21:23
21:23 His body shall not remain {m} all night upon the tree, but
      thou shalt in any wise bury him that day; (for he that is
      hanged [is] accursed of God;) that thy land be not
      defiled, which the LORD thy God giveth thee [for] an
      inheritance.

      (m) For God's law is satisfied by his death, and nature
          abhors cruelty.