Genesis 42:19 Kabbalah

אִם־כֵּנִ֣ים אַתֶּ֔ם אֲחִיכֶ֣ם אֶחָ֔ד יֵאָסֵ֖ר בְּבֵ֣ית מִשְׁמַרְכֶ֑ם וְאַתֶּם֙ לְכ֣וּ הָבִ֔יאוּ שֶׁ֖בֶר רַעֲב֥וֹן בָּתֵּיכֶֽם׃

if ye be upright men, let one of your brethren be bound in your prison-house; but go ye, carry corn for the famine of your houses;

Read kabbalistic (mystical) interpretation of Genesis 42:19: and classical mystical sources.