Mark 10:8

8andκαὶwill beἔσονταιtheοἱtwoδύοforεἰςfleshσάρκαoneμίαν·Thereforeὥστεno longerοὐκέτιthey areεἰσὶνtwoδύοbutἀλλὰoneμίαfleshσάρξ·

and the two will be for one flesh,’ so that they are no longer two, but one flesh.