GOD'S WORD® Translation
Who did God swear would never enter his place of rest? He was talking about those who didn't obey him.

American Standard Version
And to whom sware he that they should not enter into his rest, but to them that were disobedient?

Berean Study Bible
And to whom did He swear that they would never enter His rest? Was it not to those who disobeyed?

Douay-Rheims Bible
And to whom did he swear, that they should not enter into his rest: but to them that were incredulous?

English Revised Version
And to whom sware he that they should not enter into his rest, but to them that were disobedient?

King James Bible
And to whom sware he that they should not enter into his rest, but to them that believed not?

World English Bible
To whom did he swear that they wouldn't enter into his rest, but to those who were disobedient?

Young's Literal Translation
and to whom did He swear that they shall not enter into His rest, except to those who did not believe? --

Hebrews 3:18 Additional Translations ...