1 Peter 2:8

a stone of stumbling, and a rock of offense. Those who stumble at the word, are disobedient unbelievers, to which, therefore, they were appointed:

1 Peter 4:17

Indeed, the time is come that punishment must begin at the house of God; and if it begin first at us, what the end of them who do not obey the gospel of God?

Treasury of Scripture Knowledge

Summary

Because they obeyed not the voice of the LORD their God, but transgressed his covenant, and all that Moses the servant of the LORD commanded, and would not hear them, nor do them.

They obeyed not

Bible References

They obeyed not

1 Peter 2:8
a stone of stumbling, and a rock of offense. Those who stumble at the word, are disobedient unbelievers, to which, therefore, they were appointed:
1 Peter 4:17
Indeed, the time is come that punishment must begin at the house of God; and if it begin first at us, what the end of them who do not obey the gospel of God?