Matthew 19:4-6

Young's Literal Translation

⁴ And he answering said to them, `Did ye not read, that He who made [them], from the beginning a male and a female made them,

⁵ and said, For this cause shall a man leave father and mother, and cleave to his wife, and they shall be -- the two -- for one flesh?

⁶ so that they are no more two, but one flesh; what therefore God did join together, let no man put asunder.'