Psalms 105:26 Kabbalah

שָׁ֭לַח מֹשֶׁ֣ה עַבְדּ֑וֹ אַ֝הֲרֹ֗ן אֲשֶׁ֣ר בָּֽחַר־בּֽוֹ׃

He sent Moses His servant, And Aaron whom He had chosen.

Read kabbalistic (mystical) interpretation of Psalms 105:26: and classical mystical sources.