Acts 17:5

But [other] Jews became jealous and, recruiting certain ungodly riffraff, they gathered a mob and brought the city to near-riot conditions. They [even] attacked Jason's house and attempted to bring Paul and Silas before the [assembly of] people.

1 Corinthians 14:20

Brothers, do not be children in the way you think, but be babies in wrongdoing; yet be mature in your thinking.

Titus 1:10

For there are many rebellious people, especially among the circumcision [i.e., the Jews], whose talk is useless and who deceive people.

Hebrews 5:12

For certainly enough time has elapsed so that [by now] you ought to be teachers, [but instead] you are in need of having someone teach you again the basic principles of God's message. You have become people who need "milk" and not "solid food." [Note: The fundamental truths of Christianity are here figuratively spoken of as "milk," while the more advanced teaching, such as Christ's priesthood being like Melchizedek's, is called "solid food"].

Treasury of Scripture Knowledge

Summary

And there are gathered unto him vain men, the children of Belial, and have strengthened themselves against Rehoboam the son of Solomon, when Rehoboam was young and tenderhearted, and could not withstand them.

Bible References

Vain men

Acts 17:5
But [other] Jews became jealous and, recruiting certain ungodly riffraff, they gathered a mob and brought the city to near-riot conditions. They [even] attacked Jason's house and attempted to bring Paul and Silas before the [assembly of] people.
Titus 1:10
For there are many rebellious people, especially among the circumcision [i.e., the Jews], whose talk is useless and who deceive people.