Hebrews 3:13-19

You must warn each other every day, while it is still “today,” so that none of you will be deceived by sin and hardened against God. For if we are faithful to the end, trusting God just as firmly as when we first believed, we will share in all that belongs to Christ. Remember what it says: “Today when you hear his voice, don’t harden your hearts as Israel did when they rebelled.” And who was it who rebelled against God, even though they heard his voice? Wasn’t it the people Moses led out of Egypt? And who made God angry for forty years? Wasn’t it the people who sinned, whose corpses lay in the wilderness? And to whom was God speaking when he took an oath that they would never enter his rest? Wasn’t it the people who disobeyed him? So we see that because of their unbelief they were not able to enter his rest.