Mk 10:5 And Jesus answered and said unto them, For the hardness of your heart he wrote you this precept.
Mk 10:6 But from the beginning of the creation God made them male and female.
Mk 10:7 For this cause shall a man leave his father and mother, and cleave to his wife;
Mk 10:8 And they twain shall be one flesh: so then they are no more twain, but one flesh.
Mk 10:9 What therefore God hath joined together, let not man put asunder.
And of course:
2Ti 4:3 For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears;