1 Timothy 1:6
from which some, having swerved, have turned aside unto vanity of words,
Titus 1:10
For there are many insubordinate and vain talkers and deceivers of souls, especially those of the circumcision,
1 Timothy 5:15
For some are already turned back after Satan.
1 Timothy 6:4-5
he is puffed up, knowing nothing, but is driven mad concerning questions and controversy of words, of which comes envy, strife, railings, evil surmisings,
1 Timothy 6:20-21
O Timothy, keep that which is committed to thy trust, turn away from profane voices and vain things and arguments in the vain name of science,
2 Timothy 2:18
who have erred from the truth, saying that the resurrection is already past and have overthrown the faith of some.
2 Timothy 2:23-24
But foolish and unwise questions refuse, knowing that they do beget contentions.
2 Timothy 4:10
for Demas has forsaken me, having loved this present world and is departed unto Thessalonica; Crescens to Galatia, Titus unto Dalmatia.
Titus 3:9
But avoid foolish questions and genealogies and contentions and debates concerning the law, for they are unprofitable and vain.