Kabbalah su Proverbi 30:21

The punishment of one who has relations with a Cutite is stated in the Zohar in Chayei Sarah: 214. For that reason, he who cleaves to a woman from the heathen nations is defiled, and the child that she bears him receives the spirit of defilement. You may ask, Is it not of Yisrael from the side of its father? If so, why should it receive the spirit of defilement? Come and behold: First its father was besmirched when he united with that tainted woman. All the more so, the child that she bears will receive the spirit of defilement upon it. Furthermore, he also transgressed the Torah, as it is written: “For you shall worship no other El; for Hashem whose name is jealous, is a jealous El” (Shemot 34:14), which means that He is zealous of the covenant, SO THAT IT WILL NOT BE TAINTED BY HEATHEN WOMEN. 216. Come and behold: Whoever puts the holy covenant in a woman of a heathen nation causes another place to be defiled; NAMELY, HE BLEMISHES THE SUPERNAL COVENANT AND CAUSES IT TO GIVE PLENTY TO THE HANDMAID. Thus, it is written: “For three things the earth is disquieted...” (Mishlei 30:21).

Come and behold, Whoever puts the holy covenant in a woman of a heathen nation causes another place to be defiled. Thus, it is written, "For three things the earth is disquieted..." (Mishlei 30:21). And though he made him swear by the covenant, Abraham did not yet trust him, but prayed before the Holy One, blessed be He, saying "Hashem, Elohim of the heaven... He shall send his angel before you" (Gen. 24:7). His angel assuredly, the angel of the covenant, whom He shall send so that the covenant will be kept and not defiled among the nations.