וַיִּקַּ֨ח עַמְרָ֜ם אֶת־יוֹכֶ֤בֶד דֹּֽדָתוֹ֙ ל֣וֹ לְאִשָּׁ֔ה וַתֵּ֣לֶד ל֔וֹ אֶֽת־אַהֲרֹ֖ן וְאֶת־מֹשֶׁ֑ה וּשְׁנֵי֙ חַיֵּ֣י עַמְרָ֔ם שֶׁ֧בַע וּשְׁלֹשִׁ֛ים וּמְאַ֖ת שָׁנָֽה׃
아므람이 그 아비의 누이 요게벳을 아내로 취하였고 그가 아론과 모세를 낳았으며 아므람의 수는 일백삼십칠 세이었으며
Rashi
יוכבד דדתו JOCHEBED HIS AUNT — The Targum has: his father’s sister; she was daughter of Levi (cf. Exodus 2:1) and sister of Kohath.
Chizkuni
ויקח עמרם את יוכבד דודתו “Amram married his aunt Yocheved;”The only reason that seems feasible in understanding why G-d agreed to such great people as Moses and his siblings to be born from a union that the Torah would forbid once it was revealed at Mount Sinai, is the rule that we do not appoint a person to the highest position in the land unless the people were aware of at least something inappropriate that such a person had been guilty of actively or passively before his appointment. [This rule, if enforced, will diminish the chances of such high ranking people allowing their high office to develop feelings of superiority to those around him. Ed.] The best known example of the rule is King David, one of whose ancestors was Ruth, the Moabite, a people with whom intermarriage is strictly prohibited by the Torah. [He was reminded of this repeatedly during his life, not only his fitness as king being questioned, but even his claim to be Jewish. Compare Rashi on Yuma 22. Ed.]
Da'at Zekenim
ויקח עמרם את יכבד דדתו לו לאשה, “Amram took his aunt Yocheved to be his wife;” I have seen a Midrash where it is explained that the reason why when the Torah lists the penalties for incestuous relationships, (Leviticus chapter 20,10-21) but fails to list the karet penalty for marrying one’s aunt, is because Moses was born out of a relationship which the Torah would forbid later on.