Hebrews 3:18

And to whom did He swear that they would not enter His rest, but to those who did not obey?

Surrounding context

3:17 Now with whom was He angry forty years? Was it not with those who sinned, whose corpses fell in the wilderness?

3:18 And to whom did He swear that they would not enter His rest, but to those who did not obey?

3:19 So we see that they could not enter in because of unbelief.

Translation and sources