1 Corinthians 7:11

11ifἐὰνhoweverδὲindeedκαὶshe is separatedχωρισθῇ,let her remainμενέτωunmarriedἄγαμοςorἢto theτῷhusbandἀνδρὶbe reconciledκαταλλαγήτω—andκαὶa husbandἄνδραa wifeγυναῖκαnotμὴis to send awayἀφιέναι.

But if indeed she might be separated, let her remain unmarried, or be reconciled to the husband; and a husband is not to send away a wife.