1 Corinthians 5:1
It has actually been reported [to me] that there is a case of sexual immorality among you that is unheard of, even among the [unconverted] Gentiles. One of you is having sex with his stepmother.
James 1:6-8
But he should ask in faith, without doubting, because the person who doubts [that he will receive wisdom] is like an ocean wave that is driven and tossed by the wind.
2 Peter 2:14
Their eyes are filled with sexual lust, and they are never satisfied when it comes to sinning. They entice unstable people and have hearts trained to be greedy [i.e., they continually desire the possessions of others]. [In this condition] they are under God's curse.
2 Peter 3:16
He spoke about these things in all of his letters, which contain some parts that are difficult to understand. [Because of this], ignorant and unstable people twist [his writings], just as they also do to the other Scriptures, to their own destruction.