וְאֶת־יְהוּדָ֞ה שָׁלַ֤ח לְפָנָיו֙ אֶל־יוֹסֵ֔ף לְהוֹרֹ֥ת לְפָנָ֖יו גֹּ֑שְׁנָה וַיָּבֹ֖אוּ אַ֥רְצָה גֹּֽשֶׁן׃
And he sent Judah before him unto Joseph, to show the way before him unto Goshen; and they came into the land of Goshen.
Read kabbalistic (mystical) interpretation of Genesis 46:28: and classical mystical sources.