James 1:26
If any man thinks he is a religious character among you, and bridleth not his tongue, but deceiveth his own heart, this man's religion is vain.
Galatians 6:3
For if any man conceits that he is something when he is nothing, he deceiveth himself.
James 1:22
But be ye doers of the word, and not hearers only, deceiving yourselves by false reasoning.
James 3:2-6
For in many things we all offend. If any man offend not in word, he is a perfect man, and capable of reining in the whole body.
1 Peter 3:10
"For he that would love life, and see good days, let him restrain his tongue from evil, and his lips from speaking guile.
Matthew 15:9
But in vain do they worship me, teaching doctrines the commandments of men.
Mark 7:7
Now vainly do they worship me, while teaching doctrines the commandments of men."
Luke 8:18
Take heed therefore how ye hear: for whosoever hath, to him shall be given; and whosoever hath not, even what he seemeth to have shall be taken away from.
1 Corinthians 3:18
Let no man deceive himself. If any man among you thinketh himself a wise man in this world, let him become a fool, that he may be wise.
1 Corinthians 15:2
by which also ye are saved; if ye cleave to that word I have preached to you, except haply ye have believed in vain.
1 Corinthians 15:15
Yea, and we also are found false witnesses for God; because we have testified on the behalf of God, that he raised up Christ: whom he raised not up, if indeed the dead are not raised.
Galatians 2:6
But from those who appeared men of the greatest importance, (what sort of men soever they were it maketh no difference to me: God accepteth not a man's person;) for these important personages in conference added nothing to me;
Galatians 2:9
And when they knew the grace which was bestowed on me, James and Cephas and John, who appeared to be the pillars [of the church], gave unto me and Barnabas the right hand of fellowship, that we should go unto the Gentiles, and they to the circumcision:
Galatians 3:4
have ye suffered so many things in vain? if it be yet in vain.
Ephesians 4:29
Let no loose discourse proceed out of your mouth, but whatever is good for useful edification, that it may communicate grace to the hearers.
Ephesians 5:4
or obscenity, or foolish talk, or loose witticisms; things which become not [a Christian], but rather thanksgiving.
Colossians 4:6
Let your discourse be always gracious, seasoned with salt, that ye may know how ye ought to reply to every man.
James 2:20
But wilt thou know, O vain man, that faith without works is dead?