Acts 17:5

but the unbelieving Jews thro' envy, by the assistance of some loose strolers, rais'd a mob, set the whole city in an uproar, and attack'd Jason's house, thinking to find them there, and deliver them up to the populace.

1 Corinthians 14:20

Brethren, be not childish in understanding: be as innocent as babes, but use your understanding like men.

Titus 1:10

For there are many, especially among the Jews, who are obstinate, vain talkers and deceivers;

Hebrews 5:12

for though by this time you ought to be capable of teaching others, you want to be instructed anew in the first principles of the divine oracles; and are in such a state as to stand in need of milk, rather than of solid nourishment.

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 the unbelieving Jews thro' envy, by the assistance of some loose strolers, rais'd a mob, set the whole city in an uproar, and attack'd Jason's house, thinking to find them there, and deliver them up to the populace.
Titus 1:10
For there are many, especially among the Jews, who are obstinate, vain talkers and deceivers;