It's a recurring theme
1Timothy 1:3 As I besought thee to abide still at Ephesus, when I went into Macedonia, that thou mightest charge some that they teach no other doctrine,
:4 Neither give heed to fables and endless genealogies, which minister questions, rather than godly edifying which is in faith: so do.
:5 Now the end of the commandment is charity out of a pure heart, and of a good conscience, and of faith unfeigned:
:6 From which some having swerved have turned aside unto vain jangling;
:7 Desiring to be teachers of the law; understanding neither what they say, nor whereof they affirm.
:8 But we know that the law is good, if a man use it lawfully;
:9 Knowing this, that the law is not made for a righteous man, but for the lawless and disobedient, for the ungodly and for sinners, for unholy and profane, for murderers of fathers and murderers of mothers, for manslayers,
:10 For whoremongers, for them that defile themselves with mankind, for menstealers, for liars, for perjured persons, and if there be any other thing that is contrary to sound doctrine;
:11 According to the glorious gospel of the blessed God, which was committed to my trust.
"The most regular and bigoted adherence to the forms of religion furnishes no evidence in itself that there is any true piety at heart, or that true religion has any actual control over the soul. It is much easier for people to observe the forms of religion than it is to bring the heart under its controlling influence." - Albert Barnes on 2Timothy 3:5