The generation of Israel that wandered in the wilderness for 40 years did not enter the place of rest that Israel enjoyed after conquering the land (1 Kings 8:56; see Deuteronomy 12:9). The Lord promised them the land and gave it to them (Isaiah 28:12), but they did not obey him (Isaiah 28:1). This warning reminds every generation of the need to obey with faith.
The rest that God provides includes peace, provision, and protection (Psalm 132:14–18). The author of Hebrews challenged a new generation to enter the rest provided by Jesus Christ (Hebrews 3:7–4:13).