וַיֹּ֥אמֶר אֲלֵהֶ֖ם יוֹסֵ֑ף ה֗וּא אֲשֶׁ֨ר דִּבַּ֧רְתִּי אֲלֵכֶ֛ם לֵאמֹ֖ר מְרַגְּלִ֥ים אַתֶּֽם׃
And Joseph said unto them: ‘That is it that I spoke unto you, saying: Ye are spies.
Read kabbalistic (mystical) interpretation of Genesis 42:14: and classical mystical sources.