body by resorting to sexual intercourse with prostitutes. This is also the strongest reason why believers ought not to marry unbelievers.89 The physical limbs of a Christian are members of Christ; those of the non-Christian are not. If a Christian, therefore, chooses to have sexual intercourse with an unbeliever, he becomes one body with her (16), according to the foundational truth expressed in the phrase, The two shall become one flesh.90 But it is impossible for that ‘one flesh’ relationship