New Living Translation
Or if someone hates another person and hits him with a fist and he dies, it is murder. In such cases, the avenger must put the murderer to death when they meet.

American Standard Version
or in enmity smote him with his hand, so that he died; he that smote him shall surely be put to death; he is a murderer: the avenger of blood shall put the murderer to death, when he meeteth him.

Berean Study Bible
or if in hostility he strikes him with his hand and he dies, the one who struck him must surely be put to death; he is a murderer. When the avenger of blood finds the murderer, he is to kill him.

Douay-Rheims Bible
Or being his enemy, strike; him with his hand, and he die: the striker shall be guilty of murder: the kinsman of him that was slain as soon as he findeth him, shall kill him.

English Revised Version
or in enmity smote him with his hand, that he died: he that smote him shall surely be put to death; he is a manslayer: the avenger of blood shall put the manslayer to death, when he meeteth him.

King James Bible
Or in enmity smite him with his hand, that he die: he that smote him shall surely be put to death; for he is a murderer: the revenger of blood shall slay the murderer, when he meeteth him.

World English Bible
or in enmity struck him with his hand, so that he died; he who struck him shall surely be put to death; he is a murderer: the avenger of blood shall put the murderer to death, when he meets him.

Young's Literal Translation
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 Additional Translations ...