Matthew 19:5 in the King James Version
And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they twain shall be one flesh?
Context
4 He answered, “Haven’t you read that he who made them from the beginning made them male and female,
5 and said, ‘For this cause a man shall leave his father and mother, and shall be joined to his wife; and the two shall become one flesh’?
6 So that they are no more two, but one flesh. What therefore God has joined together, don’t let man tear apart.”