Whoever will contradict your mouth, and whoever will not obey all of your words, which you will instruct to him, let him die. But may you be strengthened, and may you act manfully.
Other versions
King James Version
Whosoever he be that doth rebel against thy commandment, and will not hearken unto thy words in all that thou commandest him, he shall be put to death: only be strong and of a good courage.English Standard Version
Whoever rebels against your commandment and disobeys your words, whatever you command him, shall be put to death. Only be strong and courageous."New International Version
Whoever rebels against your word and does not obey your words, whatever you may command them, will be put to death. Only be strong and courageous!"