Tafsiran Imamat 20:12: Rashi, Siftei Chakhamim, Rav Hirsch & Ibn Ezra

וְאִ֗ישׁ אֲשֶׁ֤ר יִשְׁכַּב֙ אֶת־כַּלָּת֔וֹ מ֥וֹת יוּמְת֖וּ שְׁנֵיהֶ֑ם תֶּ֥בֶל עָשׂ֖וּ דְּמֵיהֶ֥ם בָּֽם׃

Seorang laki-laki yang tidur dengan menantu perempuannya, keduanya pasti dihukum mati; mereka telah melakukan perbuatan aib, darah mereka ditanggung mereka sendiri.

Rashi

תבל עשו THEY HAVE WROUGHT תבל — i. e. they have done a shameful deed. Another interpretation is that תבל is connected with בלל to "intermingle" and signifies that they mingle (בּלל) the seed of the father with the seed of the son.
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Siftei Chakhamim

They mix. According to the first interpretation, the root [of the word] is תבל, which has [two meanings], an expression of despising, or a term referring to all the lands [of the world]. According to the second interpretation, its root is בלל.
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Rav Hirsch

V. 12. תכל עשו, ganz derselbe Ausdruck, der Kap. 18, 23 von den widernatürlichen Verbrechen vorkommt; siehe daselbst und das bereits zu V. 9 Bemerkte.
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