2 Corinthiens 1:17-20
17
When I therefore was thus minded, did I use lightness? or the things that I purpose, do I purpose according to the flesh, that with me there should be yea yea, and nay nay?
18
But as God is true, our word toward you was not yea and nay.
19
For the Son of God, Jesus Christ, who was preached among you by us, even by me and Silvanus and Timotheus, was not yea and nay, but in him was yea.
20
For all the promises of God in him are yea, and in him Amen, unto the glory of God by us.
Colossiens 4:6
Let your speech be alway with grace, seasoned with salt, that ye may know how ye ought to answer every man.
Jacques 5:12
But above all things, my brethren, swear not, neither by heaven, neither by the earth, neither by any other oath: but let your yea be yea; and your nay, nay; lest ye fall into condemnation.
Matthieu 13:19
When any one heareth the word of the kingdom, and understandeth it not, then cometh the wicked one, and catcheth away that which was sown in his heart. This is he which received seed by the way side.
Matthieu 15:19
For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies:
Jean 8:44
Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.
Ephésiens 4:25
Wherefore putting away lying, speak every man truth with his neighbour: for we are members one of another.
Colossiens 3:9
Lie not one to another, seeing that ye have put off the old man with his deeds;
Jacques 5:12
But above all things, my brethren, swear not, neither by heaven, neither by the earth, neither by any other oath: but let your yea be yea; and your nay, nay; lest ye fall into condemnation.