'Adulterous' in the Bible

And he answering said to them, 'A generation, evil and adulterous, doth seek a sign, and a sign shall not be given to it, except the sign of Jonah the prophet;

'A generation evil and adulterous doth seek a sign, and a sign shall not be given to it, except the sign of Jonah the prophet;' and having left them he went away.

for whoever may be ashamed of me, and of my words, in this adulterous and sinful generation, the Son of Man also shall be ashamed of him, when he may come in the glory of his Father, with the holy messengers.'