Deuteronomy 7:3-4

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3 H2859 neither shalt thou make marriages H1323 with them; thy daughter H5414 thou shalt not give H1121 unto his son, H1323 nor his daughter H3947 shalt thou take H1121 unto thy son.

4 H5493 For he will turn away H1121 thy son H310 from following H5647 me, that they may serve H312 other H430 gods: H639 so will the anger H3068 of Jehovah H2734 be kindled H8045 against you, and he will destroy H4118 thee quickly.