2 Thessalonians 1:8

He will inflict punishment on those people who do not know God [as Savior], and on those who do not obey the Gospel message of our Lord Jesus.

2 Timothy 2:24

For the Lord's slave must not quarrel, but be kind toward everyone, capable of teaching, [and] patient [with difficult people and situations].

Hebrews 3:5-6

Now Moses was a faithful servant among all of [those belonging to] God's household [i.e., the Israelites], as [one who gave] testimony about the things which [were to be] spoken [by him],

1 Peter 2:8

[And it also says, Isa. 8:14, that He would be], "A stone that people would stumble over and a rock over which they would trip and fall." The way they stumble is by disobeying the Gospel message. They were destined [though not forced] to do this.

1 Peter 4:17

For the time has [now] come for the house of God [the church, See I Tim. 3:15] to begin receiving judgment [i.e., by undergoing persecution], and if it starts with us [Christians], what will be the [ultimate] end of people 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.

Bible References

They obeyed not

2 Thessalonians 1:8
He will inflict punishment on those people who do not know God [as Savior], and on those who do not obey the Gospel message of our Lord Jesus.
1 Peter 2:8
[And it also says, Isa. 8:14, that He would be], "A stone that people would stumble over and a rock over which they would trip and fall." The way they stumble is by disobeying the Gospel message. They were destined [though not forced] to do this.
1 Peter 4:17
For the time has [now] come for the house of God [the church, See I Tim. 3:15] to begin receiving judgment [i.e., by undergoing persecution], and if it starts with us [Christians], what will be the [ultimate] end of people who do not obey the Gospel of God?

Moses

2 Timothy 2:24
For the Lord's slave must not quarrel, but be kind toward everyone, capable of teaching, [and] patient [with difficult people and situations].
Hebrews 3:5
Now Moses was a faithful servant among all of [those belonging to] God's household [i.e., the Israelites], as [one who gave] testimony about the things which [were to be] spoken [by him],