Matthew 19:6

6so thatὥστεno longerοὐκέτιare theyεἰσὶνtwoδύοbutἀλλὰfleshσὰρξoneμία.WhatὃthereforeοὖνὁGodθεὸςunited togetherσυνέζευξενmanἄνθρωποςnotμὴlet separateχωριζέτω.

So they are no longer two, but one flesh. Therefore what God yoked together, let man not separate.”