וְאִם־אֵינְךָ֥ מְשַׁלֵּ֖חַ לֹ֣א נֵרֵ֑ד כִּֽי־הָאִ֞ישׁ אָמַ֤ר אֵלֵ֙ינוּ֙ לֹֽא־תִרְא֣וּ פָנַ֔י בִּלְתִּ֖י אֲחִיכֶ֥ם אִתְּכֶֽם׃
but if thou wilt not send him, we will not go down, for the man said unto us: Ye shall not see my face, except your brother be with you.’
Read kabbalistic (mystical) interpretation of Genesis 43:5: and classical mystical sources.