Acts 13:41

[Hab. 1:5 says], "Look, you people who despise [God], and be amazed [at what He can do] and be destroyed [for rejecting Him]; for I [i.e., God] will accomplish such a work during your days that you will not believe [it could happen, even] if someone told you about it."

1 Thessalonians 4:8

So, the person who rejects [this exhortation] is not [merely] rejecting what man says but God [Himself], who gives His Holy Spirit to you.

Treasury of Scripture Knowledge

Summary

But even a whole month, until it come out at your nostrils, and it be loathsome unto you: because that ye have despised the LORD which is among you, and have wept before him, saying, Why came we forth out of Egypt?

Bible References

Despised

Acts 13:41
[Hab. 1:5 says], "Look, you people who despise [God], and be amazed [at what He can do] and be destroyed [for rejecting Him]; for I [i.e., God] will accomplish such a work during your days that you will not believe [it could happen, even] if someone told you about it."
1 Thessalonians 4:8
So, the person who rejects [this exhortation] is not [merely] rejecting what man says but God [Himself], who gives His Holy Spirit to you.