Albert Barnes Commentary Psalms 95:11

"Wherefore I sware in my wrath, That they should not enter into my rest." — Psalms 95:11 (ASV)

Unto whom I sware in my wrath – See the notes at (Hebrews 3:11).

That they should not enter into my rest – Margin, as in Hebrew, If they enter into my rest. The rest here referred to was the land of Canaan.

They were not permitted to enter there as a place of rest after their long and weary wanderings, but died in the wilderness. The meaning is not that none of them were saved (for we must hope that very many of them were brought to the heavenly Canaan), but that they did not come to the promised land.

Unbelief shut them out; and this fact is properly made use of here, and in (Hebrews 3:0), as furnishing a solemn warning to all not to be unbelieving and rebellious, since the consequence of unbelief and rebellion must be to exclude us from the kingdom of heaven, the true place of rest.