Numbers 35:21

21 or in enmity he hath smitten him with his hand, and he dieth; the smiter is certainly put to death; he [is] a murderer; the redeemer of blood doth put the murderer to death in his coming against him.

Numbers 35:21 Meaning and Commentary

Numbers 35:21

Or in enmity smite him with his hand, that he die
Give him a blow with his fist, on some part of his body where life is most in danger, and which issues in death:

he that smote him shall surely be put to death, for he is a murderer;
and therefore, according to the original law, ought to die, without reprieve or pardon; and notwithstanding this law made for cities of refuge, which were to be denied him:

the revenger of blood shall slay the murderer when he meeteth him:
that is, when he is condemned, as both the Targums of Onkelos and Jonathan interpret it, after a hearing and trial of his case.

Numbers 35:21 In-Context

19 `The redeemer of blood himself doth put the murderer to death; in his coming against him he doth put him to death.
20 `And if in hatred he thrust him through, or hath cast [anything] at him by lying in wait, and he dieth;
21 or in enmity he hath smitten him with his hand, and he dieth; the smiter is certainly put to death; he [is] a murderer; the redeemer of blood doth put the murderer to death in his coming against him.
22 `And if, in an instant, without enmity, he hath thrust him through, or hath cast at him any instrument, without lying in wait;
23 or with any stone wherewith he dieth, without seeing, and causeth [it] to fall upon him, and he dieth, and he [is] not his enemy, nor seeking his evil;
Young's Literal Translation is in the public domain.